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*.o
*.so
*.dll

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LICENSE 100644
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GNU LESSER GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
This version of the GNU Lesser General Public License incorporates
the terms and conditions of version 3 of the GNU General Public
License, supplemented by the additional permissions listed below.
0. Additional Definitions.
As used herein, "this License" refers to version 3 of the GNU Lesser
General Public License, and the "GNU GPL" refers to version 3 of the GNU
General Public License.
"The Library" refers to a covered work governed by this License,
other than an Application or a Combined Work as defined below.
An "Application" is any work that makes use of an interface provided
by the Library, but which is not otherwise based on the Library.
Defining a subclass of a class defined by the Library is deemed a mode
of using an interface provided by the Library.
A "Combined Work" is a work produced by combining or linking an
Application with the Library. The particular version of the Library
with which the Combined Work was made is also called the "Linked
Version".
The "Minimal Corresponding Source" for a Combined Work means the
Corresponding Source for the Combined Work, excluding any source code
for portions of the Combined Work that, considered in isolation, are
based on the Application, and not on the Linked Version.
The "Corresponding Application Code" for a Combined Work means the
object code and/or source code for the Application, including any data
and utility programs needed for reproducing the Combined Work from the
Application, but excluding the System Libraries of the Combined Work.
1. Exception to Section 3 of the GNU GPL.
You may convey a covered work under sections 3 and 4 of this License
without being bound by section 3 of the GNU GPL.
2. Conveying Modified Versions.
If you modify a copy of the Library, and, in your modifications, a
facility refers to a function or data to be supplied by an Application
that uses the facility (other than as an argument passed when the
facility is invoked), then you may convey a copy of the modified
version:
a) under this License, provided that you make a good faith effort to
ensure that, in the event an Application does not supply the
function or data, the facility still operates, and performs
whatever part of its purpose remains meaningful, or
b) under the GNU GPL, with none of the additional permissions of
this License applicable to that copy.
3. Object Code Incorporating Material from Library Header Files.
The object code form of an Application may incorporate material from
a header file that is part of the Library. You may convey such object
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a) Give prominent notice with each copy of the object code that the
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b) Accompany the object code with a copy of the GNU GPL and this license
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4. Combined Works.
You may convey a Combined Work under terms of your choice that,
taken together, effectively do not restrict modification of the
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engineering for debugging such modifications, if you also do each of
the following:
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the Library is used in it and that the Library and its use are
covered by this License.
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document.
c) For a Combined Work that displays copyright notices during
execution, include the copyright notice for the Library among
these notices, as well as a reference directing the user to the
copies of the GNU GPL and this license document.
d) Do one of the following:
0) Convey the Minimal Corresponding Source under the terms of this
License, and the Corresponding Application Code in a form
suitable for, and under terms that permit, the user to
recombine or relink the Application with a modified version of
the Linked Version to produce a modified Combined Work, in the
manner specified by section 6 of the GNU GPL for conveying
Corresponding Source.
1) Use a suitable shared library mechanism for linking with the
Library. A suitable mechanism is one that (a) uses at run time
a copy of the Library already present on the user's computer
system, and (b) will operate properly with a modified version
of the Library that is interface-compatible with the Linked
Version.
e) Provide Installation Information, but only if you would otherwise
be required to provide such information under section 6 of the
GNU GPL, and only to the extent that such information is
necessary to install and execute a modified version of the
Combined Work produced by recombining or relinking the
Application with a modified version of the Linked Version. (If
you use option 4d0, the Installation Information must accompany
the Minimal Corresponding Source and Corresponding Application
Code. If you use option 4d1, you must provide the Installation
Information in the manner specified by section 6 of the GNU GPL
for conveying Corresponding Source.)
5. Combined Libraries.
You may place library facilities that are a work based on the
Library side by side in a single library together with other library
facilities that are not Applications and are not covered by this
License, and convey such a combined library under terms of your
choice, if you do both of the following:
a) Accompany the combined library with a copy of the same work based
on the Library, uncombined with any other library facilities,
conveyed under the terms of this License.
b) Give prominent notice with the combined library that part of it
is a work based on the Library, and explaining where to find the
accompanying uncombined form of the same work.
6. Revised Versions of the GNU Lesser General Public License.
The Free Software Foundation may publish revised and/or new versions
of the GNU Lesser General Public License from time to time. Such new
versions will be similar in spirit to the present version, but may
differ in detail to address new problems or concerns.
Each version is given a distinguishing version number. If the
Library as you received it specifies that a certain numbered version
of the GNU Lesser General Public License "or any later version"
applies to it, you have the option of following the terms and
conditions either of that published version or of any later version
published by the Free Software Foundation. If the Library as you
received it does not specify a version number of the GNU Lesser
General Public License, you may choose any version of the GNU Lesser
General Public License ever published by the Free Software Foundation.
If the Library as you received it specifies that a proxy can decide
whether future versions of the GNU Lesser General Public License shall
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Library.

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Makefile 100644
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ifeq ($(OS),Windows_NT)
MAKE = mingw32-make
else
UNAME_S := $(shell uname -s)
ifeq ($(UNAME_S),Linux)
MAKE = make
endif
endif
include Makefile.dirs
all:
$(MAKE) -f Makefile.dspl
cp -r include/dspl.h release/include/dspl.h
cp -r include/dspl.c release/include/dspl.c
$(MAKE) -f Makefile.test
cp -r $(RELEASE_DIR)/$(DSPL_LIBNAME) test/bin/$(DSPL_LIBNAME)
clean:
$(MAKE) -f Makefile.dspl clean
$(MAKE) -f Makefile.test clean

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CC = gcc
INC_DIR = include
ifeq ($(OS),Windows_NT)
DSPL_LIBNAME = libdspl.dll
DEF_OS = WIN_OS
LFLAGS = -lm
ifeq ($(PROCESSOR_ARCHITEW6432),AMD64)
RELEASE_DIR = release/lib/win64
EXTLIB_DIR = ext/win64
else
ifeq ($(PROCESSOR_ARCHITECTURE),AMD64)
RELEASE_DIR = release/lib/win64
EXTLIB_DIR = ext/win64
endif
ifeq ($(PROCESSOR_ARCHITECTURE),x86)
RELEASE_DIR = release/lib/win32
EXTLIB_DIR = ext/win32
endif
endif
else
UNAME_S := $(shell uname -s)
UNAME_P := $(shell uname -p)
ifeq ($(UNAME_S),Linux)
DSPL_LIBNAME = libdspl.so
DEF_OS = LINUX_OS
LFLAGS = -lm -ldl
ifeq ($(UNAME_P),x86_64)
RELEASE_DIR = release/lib/linux64
EXTLIB_DIR = ext/linux64
endif
ifneq ($(filter %86,$(UNAME_P)),)
RELEASE_DIR = release/lib/linux32
EXTLIB_DIR = ext/linux32
endif
endif
endif

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Makefile.dspl 100644
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LIB_DIR = dspl
include Makefile.dirs
SRC_DIR = $(LIB_DIR)/src
OBJ_DIR = $(LIB_DIR)/obj
COMMON_SRC_DIR = $(COMMON_DIR)/src
LIB_NAME = $(DSPL_LIBNAME)
CFLAGS = -c -fPIC -Wall -O3 -I$(INC_DIR) -DBUILD_LIB -D$(DEF_OS)
SRC_FILES = $(wildcard $(SRC_DIR)/*.c)
OBJ_FILES = $(addprefix $(OBJ_DIR)/,$(notdir $(SRC_FILES:.c=.o)))
all: $(RELEASE_DIR)/$(LIB_NAME)
$(RELEASE_DIR)/$(LIB_NAME): $(OBJ_FILES)
$(CC) -shared -o $(RELEASE_DIR)/$(LIB_NAME) $(OBJ_FILES) -L$(EXTLIB_DIR) -lfftw3 -lblas -lm
$(OBJ_DIR)/%.o:$(SRC_DIR)/%.c
$(CC) $(CFLAGS) $< -o $@ -L$(EXTLIB_DIR) -lfftw3 -lblas -llapack -lgfortran -lm
clean:
rm -f $(OBJ_DIR)/*.o
rm -f $(RELEASE_DIR)/$(LIB_NAME)

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PRJ_DIR = test
SRC_DIR = $(PRJ_DIR)/src
BIN_DIR = $(PRJ_DIR)/bin
include Makefile.dirs
DSPL_C_FILE = $(INC_DIR)/dspl.c
DSPL_O_FILE = $(PRJ_DIR)/obj/dspl.o
SRC_FILES = $(wildcard $(SRC_DIR)/*.c)
BIN_FILES = $(addprefix $(BIN_DIR)/,$(notdir $(SRC_FILES:.c=.exe)))
CFLAGS = -Wall -O3 -I$(INC_DIR) -D$(DEF_OS)
all: $(BIN_FILES)
$(BIN_DIR)/%.exe: $(SRC_DIR)/%.c $(DSPL_O_FILE)
$(CC) $(CFLAGS) $< $(DSPL_O_FILE) -o $@ $(LFLAGS)
$(DSPL_O_FILE):$(DSPL_C_FILE)
$(CC) -c $(CFLAGS) $(DSPL_C_FILE) -o $(DSPL_O_FILE) $(LFLAGS)
clean:
rm -f $(BIN_DIR)/*.exe
rm -f $(BIN_DIR)/$(DSPL_LIBNAME)
rm -f $(DSPL_O_FILE)

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dspl/obj/.gitignore vendored 100644
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dspl/src/blas_lev1.c 100644
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/*
* Copyright (c) 2015-2018 Sergey Bakhurin
* Digital Signal Processing Library [http://dsplib.org]
*
* This file is part of libdspl-2.0.
*
* is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* DSPL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Foobar. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "dspl.h"
void dscal_(int*, double*, double*, int*);
/**************************************************************************************************
DSCAL scales a vector by a constant
***************************************************************************************************/
int DSPL_API blas_dscal(int n, double a, double* x, int incx)
{
if(!x)
return ERROR_PTR;
if(n < 1)
return ERROR_SIZE;
if(incx < 1)
return ERROR_INC_SIZE;
dscal_(&n, &a, x, &incx);
return RES_OK;
}

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dspl/src/dft.c 100644
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/*
* Copyright (c) 2015-2018 Sergey Bakhurin
* Digital Signal Processing Library [http://dsplib.org]
*
* This file is part of libdspl-2.0.
*
* is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* DSPL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Foobar. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <math.h>
#include "dspl.h"
/**************************************************************************************************
Real vector DFT
***************************************************************************************************/
int DSPL_API dft(double* x, int n, complex_t *y)
{
int k;
int m;
double divn;
double phi;
if(!x || !y)
return ERROR_PTR;
if(n<1)
return ERROR_SIZE;
divn = 1.0 / (double)n;
for(k = 0; k < n; k++)
{
RE(y[k]) = IM(y[k]) = 0.0;
for(m = 0; m < n; m++)
{
phi = -M_2PI * divn * (double)k * (double)m;
RE(y[k]) += x[m] * cos(phi);
IM(y[k]) += x[m] * sin(phi);
}
}
return RES_OK;
}
/**************************************************************************************************
Complex vector DFT
***************************************************************************************************/
int DSPL_API dft_cmplx(complex_t* x, int n, complex_t *y)
{
int k;
int m;
double divn;
double phi;
complex_t e;
if(!x || !y)
return ERROR_PTR;
if(n<1)
return ERROR_SIZE;
divn = 1.0 / (double)n;
for(k = 0; k < n; k++)
{
RE(y[k]) = IM(y[k]) = 0.0;
for(m = 0; m < n; m++)
{
phi = -M_2PI * divn * (double)k * (double)m;
RE(e) = cos(phi);
IM(e) = sin(phi);
RE(y[k]) += CMRE(x[m], e);
IM(y[k]) += CMIM(x[m], e);
}
}
return RES_OK;
}

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dspl/src/fft.c 100644
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/*
* Copyright (c) 2015-2018 Sergey Bakhurin
* Digital Signal Processing Library [http://dsplib.org]
*
* This file is part of libdspl-2.0.
*
* is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* DSPL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Foobar. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "dspl.h"
#include "fftw3.h"
/**************************************************************************************************
Create FFT object
***************************************************************************************************/
int DSPL_API fft_create( fft_t *pfft, int n)
{
if(!pfft)
return ERROR_PTR;
if(n<1)
return ERROR_SIZE;
printf("1\n");
if(pfft->in)
{
if(pfft->size != n)
pfft->in = (complex_t*) realloc(pfft->in, n*sizeof(complex_t));
}
else
pfft->in = (complex_t*) malloc(n*sizeof(complex_t));
if(pfft->out)
{
if(pfft->size != n)
pfft->out = (complex_t*) realloc(pfft->out, n*sizeof(complex_t));
}
else
pfft->out = (complex_t*) malloc(n*sizeof(complex_t));
pfft->size = n;
printf("2\n");
if(pfft->pfftw)
fftw_destroy_plan(pfft->pfftw);
printf("3\n");
pfft->pfftw = (void*)fftw_plan_dft_1d(n, pfft->in, pfft->out, FFTW_FORWARD, FFTW_ESTIMATE);
printf("4\n");
if(!pfft->pfftw)
return ERROR_FFT_CREATE;
return RES_OK;
}
/**************************************************************************************************
Destroy FFT object
***************************************************************************************************/
void DSPL_API fft_destroy(fft_t *pfft)
{
if(pfft)
return;
if(pfft->pfftw)
fftw_destroy_plan(pfft->pfftw);
if(pfft->in)
free(pfft->in);
if(pfft->out)
free(pfft->out);
pfft->size = 0;
}
/**************************************************************************************************
Destroy FFT object
***************************************************************************************************/
int DSPL_API fft_cmplx(complex_t *x, int n, fft_t* pfft, complex_t* y)
{
if(!x || !y || !pfft)
return ERROR_PTR;
if(n<1)
return ERROR_SIZE;
if(n != pfft->size)
fft_create(pfft, n);
memcpy(pfft->in, x, n*sizeof(complex_t));
fftw_execute(pfft->pfftw);
memcpy(y, pfft->out, n*sizeof(complex_t));
return RES_OK;
}
/**************************************************************************************************
FFT shifting
***************************************************************************************************/
int DSPL_API fft_shift(double* x, int n, double* y)
{
int n2, r;
int k;
double tmp;
double *buf;
if(!x || !y)
return ERROR_PTR;
if(n<1)
return ERROR_SIZE;
r = n%2;
if(!r)
{
n2 = n>>1;
for(k = 0; k < n2; k++)
{
tmp = x[k];
y[k] = x[k+n2];
y[k+n2] = tmp;
}
}
else
{
n2 = (n-1) >> 1;
buf = (double*) malloc(n2*sizeof(double));
memcpy(buf, x, n2*sizeof(double));
memcpy(y, x+n2, (n2+1)*sizeof(double));
memcpy(y+n2+1, buf, n2*sizeof(double));
free(buf);
}
return RES_OK;
}

0
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ext/linux64/.gitignore vendored 100644
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BIN
ext/linux64/libblas.a 100644
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BIN
ext/linux64/libfftw3.a 100644
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BIN
ext/linux64/liblapack.a 100644
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0
ext/win32/.gitignore vendored 100644
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ext/win64/.gitignore vendored 100644
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ext/win64/libfftw3.a 100644
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include/dspl.c 100644
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/*
* Copyright (c) 2015-2018 Sergey Bakhurin
* Digital Signal Processing Library [http://dsplib.org]
*
* This file is part of libdspl-2.0.
*
* is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* DSPL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Foobar. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef WIN_OS
#include <windows.h>
#endif //WIN_OS
#ifdef LINUX_OS
#include <dlfcn.h>
#endif //LINUX_OS
#include <stdio.h>
#include "dspl.h"
#ifndef BUILD_LIB
p_blas_dscal blas_dscal ;
p_dft dft ;
p_dft_cmplx dft_cmplx ;
p_fft_create fft_create ;
p_fft_destroy fft_destroy ;
p_fft_cmplx fft_cmplx ;
p_fft_shift fft_shift ;
#endif //BUILD_LIB
void* dspl_load()
{
#ifdef WIN_OS
HINSTANCE handle;
char* fname;
handle = LoadLibrary(TEXT("libdspl.dll"));
if (!handle)
{
printf("libdspl.dll loading ERROR!\n");
return NULL;
}
fname = "dft";
dft = (p_dft)GetProcAddress(handle, fname);
if(!dft) goto exit_label;
fname = "dft_cmplx";
dft_cmplx = (p_dft_cmplx)GetProcAddress(handle, fname);
if(!dft_cmplx) goto exit_label;
fname = "fft_create";
fft_create = (p_fft_create)GetProcAddress(handle, fname);
if(!fft_create) goto exit_label;
fname = "fft_destroy";
fft_destroy = (p_fft_destroy)GetProcAddress(handle, fname);
if(!fft_destroy) goto exit_label;
fname = "fft_cmplx";
fft_cmplx = (p_fft_cmplx)GetProcAddress(handle, fname);
if(!fft_cmplx) goto exit_label;
fname = "fft_shift";
fft_shift = (p_fft_shift)GetProcAddress(handle, fname);
if(!fft_shift) goto exit_label;
return (void*)handle;
exit_label:
printf("function %s loading ERROR!\n", fname);
if(handle)
FreeLibrary(handle);
return NULL;
#endif //WIN_OS
#ifdef LINUX_OS
char* error;
void *handle;
char* fname;
// open the *.so
handle = dlopen ("./libdspl.so", RTLD_LAZY);
if (!handle)
{
printf("libdspl.so loading ERROR!\n");
return NULL;
}
fname = "blas_dscal";
blas_dscal = (p_blas_dscal)dlsym(handle, fname);
if ((error = dlerror()) != NULL) goto exit_label;
fname = "dft";
dft = (p_dft)dlsym(handle, fname);
if ((error = dlerror()) != NULL) goto exit_label;
fname = "dft_cmplx";
dft_cmplx = (p_dft_cmplx)dlsym(handle, fname);
if ((error = dlerror()) != NULL) goto exit_label;
fname = "fft_create";
fft_create = (p_fft_create)dlsym(handle, fname);
if ((error = dlerror()) != NULL) goto exit_label;
fname = "fft_destroy";
fft_destroy = (p_fft_destroy)dlsym(handle, fname);
if ((error = dlerror()) != NULL) goto exit_label;
fname = "fft_cmplx";
fft_cmplx = (p_fft_cmplx)dlsym(handle, fname);
if ((error = dlerror()) != NULL) goto exit_label;
fname = "fft_shift";
fft_shift = (p_fft_shift)dlsym(handle, fname);
if ((error = dlerror()) != NULL) goto exit_label;
return handle;
exit_label:
printf("function %s loading ERROR!\n", fname);
if(handle)
dlclose(handle);
return NULL;
#endif //LINUX_OS
}
void dspl_free(void* handle)
{
#ifdef WIN_OS
FreeLibrary((HINSTANCE)handle);
#endif //WIN_OS
#ifdef LINUX_OS
dlclose(handle);
#endif //LINUX_OS
}

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/*
* Copyright (c) 2015-2018 Sergey Bakhurin
* Digital Signal Processing Library [http://dsplib.org]
*
* This file is part of libdspl-2.0.
*
* is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* DSPL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Foobar. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef DSPL_H
#define DSPL_H
#include <math.h>
/* math const definition */
#ifndef M_PI
#define M_PI 3.1415926535897932384626433832795
#endif
#ifndef M_2PI
#define M_2PI 6.283185307179586476925286766559
#endif
typedef double complex_t[2];
typedef struct
{
void *pfftw;
complex_t *in;
complex_t *out;
size_t size;
} fft_t;
#define RE(x) (x[0])
#define IM(x) (x[1])
#define SQR(x) ((x) * (x))
#define ABSSQR(x) ((SQR(RE(x))) + (SQR(IM(x))))
#define ABS(x) sqrt((ABSSQR(x)))
#define CMRE(a,b) ((RE(a)) * (RE(b)) - (IM(a)) * (IM(b)))
#define CMIM(a,b) ((RE(a)) * (IM(b)) + (IM(a)) * (RE(b)))
#define CMCONJRE(a, b) ((RE(a)) * (RE(b)) + (IM(a)) * (IM(b)))
#define CMCONJIM(a, b) ((IM(a)) * (RE(b)) - (RE(a)) * (IM(b)))
#define RES_OK 0
/* Error codes */
/* A 0x01xxxxxx*/
/* B 0x02xxxxxx*/
/* C 0x03xxxxxx*/
/* D 0x04xxxxxx*/
#define ERROR_DAT_TYPE 0x04012020
#define ERROR_DIV_ZERO 0x04102226
/* E 0x05xxxxxx*/
#define ERROR_ELLIP_MODULE 0x05121315
/* F 0x06xxxxxx*/
#define ERROR_FFT_CREATE 0x06060318
#define ERROR_FILTER_A0 0x06100100
#define ERROR_FILTER_ORD 0x06101518
#define ERROR_FILTER_RP 0x06101816
#define ERROR_FILTER_RS 0x06101819
#define ERROR_FNAME 0x06140113
#define ERROR_FOPEN 0x06151605
#define ERROR_FWRITE_SIZE 0x06231820
/* G 0x07xxxxxx*/
/* H 0x08xxxxxx*/
/* I 0x09xxxxxx*/
#define ERROR_INC_SIZE 0x09140319
/* J 0x10xxxxxx*/
/* K 0x11xxxxxx*/
/* L 0x12xxxxxx*/
/* M 0x13xxxxxx*/
/* N 0x14xxxxxx*/
#define ERROR_NEGATIVE 0x14050701
/* O 0x15xxxxxx*/
/* P 0x16xxxxxx*/
#define ERROR_POLY_ORD 0x16151518
#define ERROR_PTR 0x16201800
/* Q 0x17xxxxxx*/
/* R 0x18xxxxxx*/
#define ERROR_RAND_SIGMA 0x18011909
#define ERROR_RESAMPLE_RATIO 0x18051801
#define ERROR_RESAMPLE_FRAC_DELAY 0x18050604
/* S 0x19xxxxxx*/
#define ERROR_SIZE 0x19092605
#define ERROR_SYM_TYPE 0x19251320
/* T 0x20xxxxxx*/
/* U 0x21xxxxxx*/
/* V 0x22xxxxxx*/
/* W 0x23xxxxxx*/
#define ERROR_WIN_TYPE 0x23092025
#define ERROR_WIN_SYM 0x23091925
/* X 0x24xxxxxx*/
/* Y 0x25xxxxxx*/
/* Z 0x26xxxxxx*/
#define DAT_DOUBLE 0
#define DAT_COMPLEX 1
#ifdef __cplusplus
extern "C" {
#endif
// Declare DSPL_API for Windows OS
#ifdef BUILD_LIB
#ifdef WIN_OS
#define DSPL_API __declspec(dllexport)
#endif // WIN_OS
#ifdef LINUX_OS
#define DSPL_API
#endif //LINUX_OS
int DSPL_API blas_dscal(int n, double a, double* x, int incx);
int DSPL_API dft (double* x, int n, complex_t *y);
int DSPL_API dft_cmplx (complex_t* x, int n, complex_t *y);
int DSPL_API fft_create ( fft_t *pfft, int n);
void DSPL_API fft_destroy (fft_t *pfft);
int DSPL_API fft_cmplx (complex_t *x, int n, fft_t* pfft, complex_t* y);
int DSPL_API fft_shift (double* x, int n, double* y);
#else //BUILD_LIB
typedef int (*p_blas_dscal ) (int n, double a, double* x, int incx);
typedef int (*p_dft ) (double* x, int n, complex_t *y);
typedef int (*p_dft_cmplx ) (complex_t* x, int n, complex_t *y);
typedef int (*p_fft_create ) (fft_t *pfft, int n);
typedef void(*p_fft_destroy ) (fft_t *pfft);
typedef int (*p_fft_cmplx ) (complex_t *x, int n, fft_t* pfft, complex_t* y);
typedef int (*p_fft_shift ) (double* x, int n, double* y);
extern p_blas_dscal blas_dscal ;
extern p_dft dft ;
extern p_dft_cmplx dft_cmplx ;
extern p_fft_create fft_create ;
extern p_fft_destroy fft_destroy ;
extern p_fft_cmplx fft_cmplx ;
extern p_fft_shift fft_shift ;
#endif //BUILD_DLL
#ifdef __cplusplus
}
#endif
void* dspl_load();
void dspl_free(void* handle);
#endif //DSPL_H

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include/fftw3.h 100644
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/*
* Copyright (c) 2003, 2007-14 Matteo Frigo
* Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
*
* The following statement of license applies *only* to this header file,
* and *not* to the other files distributed with FFTW or derived therefrom:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/***************************** NOTE TO USERS *********************************
*
* THIS IS A HEADER FILE, NOT A MANUAL
*
* If you want to know how to use FFTW, please read the manual,
* online at http://www.fftw.org/doc/ and also included with FFTW.
* For a quick start, see the manual's tutorial section.
*
* (Reading header files to learn how to use a library is a habit
* stemming from code lacking a proper manual. Arguably, it's a
* *bad* habit in most cases, because header files can contain
* interfaces that are not part of the public, stable API.)
*
****************************************************************************/
#ifndef FFTW3_H
#define FFTW3_H
#include <stdio.h>
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
/* If <complex.h> is included, use the C99 complex type. Otherwise
define a type bit-compatible with C99 complex */
#if !defined(FFTW_NO_Complex) && defined(_Complex_I) && defined(complex) && defined(I)
# define FFTW_DEFINE_COMPLEX(R, C) typedef R _Complex C
#else
# define FFTW_DEFINE_COMPLEX(R, C) typedef R C[2]
#endif
#define FFTW_CONCAT(prefix, name) prefix ## name
#define FFTW_MANGLE_DOUBLE(name) FFTW_CONCAT(fftw_, name)
#define FFTW_MANGLE_FLOAT(name) FFTW_CONCAT(fftwf_, name)
#define FFTW_MANGLE_LONG_DOUBLE(name) FFTW_CONCAT(fftwl_, name)
#define FFTW_MANGLE_QUAD(name) FFTW_CONCAT(fftwq_, name)
/* IMPORTANT: for Windows compilers, you should add a line
#define FFTW_DLL
here and in kernel/ifftw.h if you are compiling/using FFTW as a
DLL, in order to do the proper importing/exporting, or
alternatively compile with -DFFTW_DLL or the equivalent
command-line flag. This is not necessary under MinGW/Cygwin, where
libtool does the imports/exports automatically. */
#if defined(FFTW_DLL) && (defined(_WIN32) || defined(__WIN32__))
/* annoying Windows syntax for shared-library declarations */
# if defined(COMPILING_FFTW) /* defined in api.h when compiling FFTW */
# define FFTW_EXTERN extern __declspec(dllexport)
# else /* user is calling FFTW; import symbol */
# define FFTW_EXTERN extern __declspec(dllimport)
# endif
#else
# define FFTW_EXTERN extern
#endif
/* specify calling convention (Windows only) */
#if defined(_WIN32) || defined(__WIN32__)
# define FFTW_CDECL __cdecl
#else
# define FFTW_CDECL
#endif
enum fftw_r2r_kind_do_not_use_me {
FFTW_R2HC=0, FFTW_HC2R=1, FFTW_DHT=2,
FFTW_REDFT00=3, FFTW_REDFT01=4, FFTW_REDFT10=5, FFTW_REDFT11=6,
FFTW_RODFT00=7, FFTW_RODFT01=8, FFTW_RODFT10=9, FFTW_RODFT11=10
};
struct fftw_iodim_do_not_use_me {
int n; /* dimension size */
int is; /* input stride */
int os; /* output stride */
};
#include <stddef.h> /* for ptrdiff_t */
struct fftw_iodim64_do_not_use_me {
ptrdiff_t n; /* dimension size */
ptrdiff_t is; /* input stride */
ptrdiff_t os; /* output stride */
};
typedef void (FFTW_CDECL *fftw_write_char_func_do_not_use_me)(char c, void *);
typedef int (FFTW_CDECL *fftw_read_char_func_do_not_use_me)(void *);
/*
huge second-order macro that defines prototypes for all API
functions. We expand this macro for each supported precision
X: name-mangling macro
R: real data type
C: complex data type
*/
#define FFTW_DEFINE_API(X, R, C) \
\
FFTW_DEFINE_COMPLEX(R, C); \
\
typedef struct X(plan_s) *X(plan); \
\
typedef struct fftw_iodim_do_not_use_me X(iodim); \
typedef struct fftw_iodim64_do_not_use_me X(iodim64); \
\
typedef enum fftw_r2r_kind_do_not_use_me X(r2r_kind); \
\
typedef fftw_write_char_func_do_not_use_me X(write_char_func); \
typedef fftw_read_char_func_do_not_use_me X(read_char_func); \
\
FFTW_EXTERN void \
FFTW_CDECL X(execute)(const X(plan) p); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_dft)(int rank, const int *n, \
C *in, C *out, int sign, unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_dft_1d)(int n, C *in, C *out, int sign, \
unsigned flags); \
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_dft_2d)(int n0, int n1, \
C *in, C *out, int sign, unsigned flags); \
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_dft_3d)(int n0, int n1, int n2, \
C *in, C *out, int sign, unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_many_dft)(int rank, const int *n, \
int howmany, \
C *in, const int *inembed, \
int istride, int idist, \
C *out, const int *onembed, \
int ostride, int odist, \
int sign, unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_guru_dft)(int rank, const X(iodim) *dims, \
int howmany_rank, \
const X(iodim) *howmany_dims, \
C *in, C *out, \
int sign, unsigned flags); \
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_guru_split_dft)(int rank, const X(iodim) *dims, \
int howmany_rank, \
const X(iodim) *howmany_dims, \
R *ri, R *ii, R *ro, R *io, \
unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_guru64_dft)(int rank, \
const X(iodim64) *dims, \
int howmany_rank, \
const X(iodim64) *howmany_dims, \
C *in, C *out, \
int sign, unsigned flags); \
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_guru64_split_dft)(int rank, \
const X(iodim64) *dims, \
int howmany_rank, \
const X(iodim64) *howmany_dims, \
R *ri, R *ii, R *ro, R *io, \
unsigned flags); \
\
FFTW_EXTERN void \
FFTW_CDECL X(execute_dft)(const X(plan) p, C *in, C *out); \
\
FFTW_EXTERN void \
FFTW_CDECL X(execute_split_dft)(const X(plan) p, R *ri, R *ii, \
R *ro, R *io); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_many_dft_r2c)(int rank, const int *n, \
int howmany, \
R *in, const int *inembed, \
int istride, int idist, \
C *out, const int *onembed, \
int ostride, int odist, \
unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_dft_r2c)(int rank, const int *n, \
R *in, C *out, unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_dft_r2c_1d)(int n,R *in,C *out,unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_dft_r2c_2d)(int n0, int n1, \
R *in, C *out, unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_dft_r2c_3d)(int n0, int n1, \
int n2, \
R *in, C *out, unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_many_dft_c2r)(int rank, const int *n, \
int howmany, \
C *in, const int *inembed, \
int istride, int idist, \
R *out, const int *onembed, \
int ostride, int odist, \
unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_dft_c2r)(int rank, const int *n, \
C *in, R *out, unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_dft_c2r_1d)(int n,C *in,R *out,unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_dft_c2r_2d)(int n0, int n1, \
C *in, R *out, unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_dft_c2r_3d)(int n0, int n1, \
int n2, \
C *in, R *out, unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_guru_dft_r2c)(int rank, const X(iodim) *dims, \
int howmany_rank, \
const X(iodim) *howmany_dims, \
R *in, C *out, \
unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_guru_dft_c2r)(int rank, const X(iodim) *dims, \
int howmany_rank, \
const X(iodim) *howmany_dims, \
C *in, R *out, \
unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_guru_split_dft_r2c)(int rank, const X(iodim) *dims, \
int howmany_rank, \
const X(iodim) *howmany_dims, \
R *in, R *ro, R *io, \
unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_guru_split_dft_c2r)(int rank, const X(iodim) *dims, \
int howmany_rank, \
const X(iodim) *howmany_dims, \
R *ri, R *ii, R *out, \
unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_guru64_dft_r2c)(int rank, \
const X(iodim64) *dims, \
int howmany_rank, \
const X(iodim64) *howmany_dims, \
R *in, C *out, \
unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_guru64_dft_c2r)(int rank, \
const X(iodim64) *dims, \
int howmany_rank, \
const X(iodim64) *howmany_dims, \
C *in, R *out, \
unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_guru64_split_dft_r2c)(int rank, const X(iodim64) *dims, \
int howmany_rank, \
const X(iodim64) *howmany_dims, \
R *in, R *ro, R *io, \
unsigned flags); \
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_guru64_split_dft_c2r)(int rank, const X(iodim64) *dims, \
int howmany_rank, \
const X(iodim64) *howmany_dims, \
R *ri, R *ii, R *out, \
unsigned flags); \
\
FFTW_EXTERN void \
FFTW_CDECL X(execute_dft_r2c)(const X(plan) p, R *in, C *out); \
\
FFTW_EXTERN void \
FFTW_CDECL X(execute_dft_c2r)(const X(plan) p, C *in, R *out); \
\
FFTW_EXTERN void \
FFTW_CDECL X(execute_split_dft_r2c)(const X(plan) p, \
R *in, R *ro, R *io); \
\
FFTW_EXTERN void \
FFTW_CDECL X(execute_split_dft_c2r)(const X(plan) p, \
R *ri, R *ii, R *out); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_many_r2r)(int rank, const int *n, \
int howmany, \
R *in, const int *inembed, \
int istride, int idist, \
R *out, const int *onembed, \
int ostride, int odist, \
const X(r2r_kind) *kind, unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_r2r)(int rank, const int *n, R *in, R *out, \
const X(r2r_kind) *kind, unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_r2r_1d)(int n, R *in, R *out, \
X(r2r_kind) kind, unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_r2r_2d)(int n0, int n1, R *in, R *out, \
X(r2r_kind) kind0, X(r2r_kind) kind1, \
unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_r2r_3d)(int n0, int n1, int n2, \
R *in, R *out, X(r2r_kind) kind0, \
X(r2r_kind) kind1, X(r2r_kind) kind2, \
unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_guru_r2r)(int rank, const X(iodim) *dims, \
int howmany_rank, \
const X(iodim) *howmany_dims, \
R *in, R *out, \
const X(r2r_kind) *kind, unsigned flags); \
\
FFTW_EXTERN X(plan) \
FFTW_CDECL X(plan_guru64_r2r)(int rank, const X(iodim64) *dims, \
int howmany_rank, \
const X(iodim64) *howmany_dims, \
R *in, R *out, \
const X(r2r_kind) *kind, unsigned flags); \
\
FFTW_EXTERN void \
FFTW_CDECL X(execute_r2r)(const X(plan) p, R *in, R *out); \
\
FFTW_EXTERN void \
FFTW_CDECL X(destroy_plan)(X(plan) p); \
\
FFTW_EXTERN void \
FFTW_CDECL X(forget_wisdom)(void); \
FFTW_EXTERN void \
FFTW_CDECL X(cleanup)(void); \
\
FFTW_EXTERN void \
FFTW_CDECL X(set_timelimit)(double t); \
\
FFTW_EXTERN void \
FFTW_CDECL X(plan_with_nthreads)(int nthreads); \
\
FFTW_EXTERN int \
FFTW_CDECL X(init_threads)(void); \
\
FFTW_EXTERN void \
FFTW_CDECL X(cleanup_threads)(void); \
\
FFTW_EXTERN void \
FFTW_CDECL X(make_planner_thread_safe)(void); \
\
FFTW_EXTERN int \
FFTW_CDECL X(export_wisdom_to_filename)(const char *filename); \
\
FFTW_EXTERN void \
FFTW_CDECL X(export_wisdom_to_file)(FILE *output_file); \
\
FFTW_EXTERN char * \
FFTW_CDECL X(export_wisdom_to_string)(void); \
\
FFTW_EXTERN void \
FFTW_CDECL X(export_wisdom)(X(write_char_func) write_char, \
void *data); \
FFTW_EXTERN int \
FFTW_CDECL X(import_system_wisdom)(void); \
\
FFTW_EXTERN int \
FFTW_CDECL X(import_wisdom_from_filename)(const char *filename); \
\
FFTW_EXTERN int \
FFTW_CDECL X(import_wisdom_from_file)(FILE *input_file); \
\
FFTW_EXTERN int \
FFTW_CDECL X(import_wisdom_from_string)(const char *input_string); \
\
FFTW_EXTERN int \
FFTW_CDECL X(import_wisdom)(X(read_char_func) read_char, void *data); \
\
FFTW_EXTERN void \
FFTW_CDECL X(fprint_plan)(const X(plan) p, FILE *output_file); \
\
FFTW_EXTERN void \
FFTW_CDECL X(print_plan)(const X(plan) p); \
\
FFTW_EXTERN char * \
FFTW_CDECL X(sprint_plan)(const X(plan) p); \
\
FFTW_EXTERN void * \
FFTW_CDECL X(malloc)(size_t n); \
\
FFTW_EXTERN R * \
FFTW_CDECL X(alloc_real)(size_t n); \
FFTW_EXTERN C * \
FFTW_CDECL X(alloc_complex)(size_t n); \
\
FFTW_EXTERN void \
FFTW_CDECL X(free)(void *p); \
\
FFTW_EXTERN void \
FFTW_CDECL X(flops)(const X(plan) p, \
double *add, double *mul, double *fmas); \
FFTW_EXTERN double \
FFTW_CDECL X(estimate_cost)(const X(plan) p); \
\
FFTW_EXTERN double \
FFTW_CDECL X(cost)(const X(plan) p); \
\
FFTW_EXTERN int \
FFTW_CDECL X(alignment_of)(R *p); \
\
FFTW_EXTERN const char X(version)[]; \
FFTW_EXTERN const char X(cc)[]; \
FFTW_EXTERN const char X(codelet_optim)[];
/* end of FFTW_DEFINE_API macro */
FFTW_DEFINE_API(FFTW_MANGLE_DOUBLE, double, fftw_complex)
FFTW_DEFINE_API(FFTW_MANGLE_FLOAT, float, fftwf_complex)
FFTW_DEFINE_API(FFTW_MANGLE_LONG_DOUBLE, long double, fftwl_complex)
/* __float128 (quad precision) is a gcc extension on i386, x86_64, and ia64
for gcc >= 4.6 (compiled in FFTW with --enable-quad-precision) */
#if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) \
&& !(defined(__ICC) || defined(__INTEL_COMPILER) || defined(__CUDACC__) || defined(__PGI)) \
&& (defined(__i386__) || defined(__x86_64__) || defined(__ia64__))
# if !defined(FFTW_NO_Complex) && defined(_Complex_I) && defined(complex) && defined(I)
/* note: __float128 is a typedef, which is not supported with the _Complex
keyword in gcc, so instead we use this ugly __attribute__ version.
However, we can't simply pass the __attribute__ version to
FFTW_DEFINE_API because the __attribute__ confuses gcc in pointer
types. Hence redefining FFTW_DEFINE_COMPLEX. Ugh. */
# undef FFTW_DEFINE_COMPLEX
# define FFTW_DEFINE_COMPLEX(R, C) typedef _Complex float __attribute__((mode(TC))) C
# endif
FFTW_DEFINE_API(FFTW_MANGLE_QUAD, __float128, fftwq_complex)
#endif
#define FFTW_FORWARD (-1)
#define FFTW_BACKWARD (+1)
#define FFTW_NO_TIMELIMIT (-1.0)
/* documented flags */
#define FFTW_MEASURE (0U)
#define FFTW_DESTROY_INPUT (1U << 0)
#define FFTW_UNALIGNED (1U << 1)
#define FFTW_CONSERVE_MEMORY (1U << 2)
#define FFTW_EXHAUSTIVE (1U << 3) /* NO_EXHAUSTIVE is default */
#define FFTW_PRESERVE_INPUT (1U << 4) /* cancels FFTW_DESTROY_INPUT */
#define FFTW_PATIENT (1U << 5) /* IMPATIENT is default */
#define FFTW_ESTIMATE (1U << 6)
#define FFTW_WISDOM_ONLY (1U << 21)
/* undocumented beyond-guru flags */
#define FFTW_ESTIMATE_PATIENT (1U << 7)
#define FFTW_BELIEVE_PCOST (1U << 8)
#define FFTW_NO_DFT_R2HC (1U << 9)
#define FFTW_NO_NONTHREADED (1U << 10)
#define FFTW_NO_BUFFERING (1U << 11)
#define FFTW_NO_INDIRECT_OP (1U << 12)
#define FFTW_ALLOW_LARGE_GENERIC (1U << 13) /* NO_LARGE_GENERIC is default */
#define FFTW_NO_RANK_SPLITS (1U << 14)
#define FFTW_NO_VRANK_SPLITS (1U << 15)
#define FFTW_NO_VRECURSE (1U << 16)
#define FFTW_NO_SIMD (1U << 17)
#define FFTW_NO_SLOW (1U << 18)
#define FFTW_NO_FIXED_RADIX_LARGE_N (1U << 19)
#define FFTW_ALLOW_PRUNING (1U << 20)
#ifdef __cplusplus
} /* extern "C" */
#endif /* __cplusplus */
#endif /* FFTW3_H */

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Сборка FFTW для LINUX
Для того чтобы разрешить позиционно-независимый код необходимо FFTW3 конфигурировать с флагом --enable-shared
./configure --enable-shared
make
После этого в скрытой дириктории .lib появится so файл и a файл. Статический файл a можно ликновать с so и подключать в so библиотеку.

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#ifdef WIN_OS
#include <windows.h>
#endif //WIN_OS
#ifdef LINUX_OS
#include <dlfcn.h>
#endif //LINUX_OS
#include <stdio.h>
#include "dspl.h"
#ifndef BUILD_LIB
p_blas_dscal blas_dscal ;
p_dft dft ;
p_dft_cmplx dft_cmplx ;
p_fft_create fft_create ;
p_fft_destroy fft_destroy ;
p_fft_cmplx fft_cmplx ;
p_fft_shift fft_shift ;
#endif //BUILD_LIB
void* dspl_load()
{
#ifdef WIN_OS
HINSTANCE handle;
char* fname;
handle = LoadLibrary(TEXT("libdspl.dll"));
if (!handle)
{
printf("libdspl.dll loading ERROR!\n");
return NULL;
}
fname = "dft";
dft = (p_dft)GetProcAddress(handle, fname);
if(!dft) goto exit_label;
fname = "dft_cmplx";
dft_cmplx = (p_dft_cmplx)GetProcAddress(handle, fname);
if(!dft_cmplx) goto exit_label;
fname = "fft_create";
fft_create = (p_fft_create)GetProcAddress(handle, fname);
if(!fft_create) goto exit_label;
fname = "fft_destroy";
fft_destroy = (p_fft_destroy)GetProcAddress(handle, fname);
if(!fft_destroy) goto exit_label;
fname = "fft_cmplx";
fft_cmplx = (p_fft_cmplx)GetProcAddress(handle, fname);
if(!fft_cmplx) goto exit_label;
fname = "fft_shift";
fft_shift = (p_fft_shift)GetProcAddress(handle, fname);
if(!fft_shift) goto exit_label;
return (void*)handle;
exit_label:
printf("function %s loading ERROR!\n", fname);
if(handle)
FreeLibrary(handle);
return NULL;
#endif //WIN_OS
#ifdef LINUX_OS
char* error;
void *handle;
char* fname;
// open the *.so
handle = dlopen ("./libdspl.so", RTLD_LAZY);
if (!handle)
{
printf("libdspl.so loading ERROR!\n");
return NULL;
}
fname = "blas_dscal";
blas_dscal = (p_blas_dscal)dlsym(handle, fname);
if ((error = dlerror()) != NULL) goto exit_label;
fname = "dft";
dft = (p_dft)dlsym(handle, fname);
if ((error = dlerror()) != NULL) goto exit_label;
fname = "dft_cmplx";
dft_cmplx = (p_dft_cmplx)dlsym(handle, fname);
if ((error = dlerror()) != NULL) goto exit_label;
fname = "fft_create";
fft_create = (p_fft_create)dlsym(handle, fname);
if ((error = dlerror()) != NULL) goto exit_label;
fname = "fft_destroy";
fft_destroy = (p_fft_destroy)dlsym(handle, fname);
if ((error = dlerror()) != NULL) goto exit_label;
fname = "fft_cmplx";
fft_cmplx = (p_fft_cmplx)dlsym(handle, fname);
if ((error = dlerror()) != NULL) goto exit_label;
fname = "fft_shift";
fft_shift = (p_fft_shift)dlsym(handle, fname);
if ((error = dlerror()) != NULL) goto exit_label;
return handle;
exit_label:
printf("function %s loading ERROR!\n", fname);
if(handle)
dlclose(handle);
return NULL;
#endif //LINUX_OS
}
void dspl_free(void* handle)
{
#ifdef WIN_OS
FreeLibrary((HINSTANCE)handle);
#endif //WIN_OS
#ifdef LINUX_OS
dlclose(handle);
#endif //LINUX_OS
}

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#ifndef DSPL_H
#define DSPL_H
#include <math.h>
/* math const definition */
#ifndef M_PI
#define M_PI 3.1415926535897932384626433832795
#endif
#ifndef M_2PI
#define M_2PI 6.283185307179586476925286766559
#endif
typedef double complex_t[2];
typedef struct
{
void *pfftw;
complex_t *in;
complex_t *out;
size_t size;
} fft_t;
#define RE(x) (x[0])
#define IM(x) (x[1])
#define SQR(x) ((x) * (x))
#define ABSSQR(x) ((SQR(RE(x))) + (SQR(IM(x))))
#define ABS(x) sqrt((ABSSQR(x)))
#define CMRE(a,b) ((RE(a)) * (RE(b)) - (IM(a)) * (IM(b)))
#define CMIM(a,b) ((RE(a)) * (IM(b)) + (IM(a)) * (RE(b)))
#define CMCONJRE(a, b) ((RE(a)) * (RE(b)) + (IM(a)) * (IM(b)))
#define CMCONJIM(a, b) ((IM(a)) * (RE(b)) - (RE(a)) * (IM(b)))
#define RES_OK 0
/* Error codes */
/* A 0x01xxxxxx*/
/* B 0x02xxxxxx*/
/* C 0x03xxxxxx*/
/* D 0x04xxxxxx*/
#define ERROR_DAT_TYPE 0x04012020
#define ERROR_DIV_ZERO 0x04102226
/* E 0x05xxxxxx*/
#define ERROR_ELLIP_MODULE 0x05121315
/* F 0x06xxxxxx*/
#define ERROR_FFT_CREATE 0x06060318
#define ERROR_FILTER_A0 0x06100100
#define ERROR_FILTER_ORD 0x06101518
#define ERROR_FILTER_RP 0x06101816
#define ERROR_FILTER_RS 0x06101819
#define ERROR_FNAME 0x06140113
#define ERROR_FOPEN 0x06151605
#define ERROR_FWRITE_SIZE 0x06231820
/* G 0x07xxxxxx*/
/* H 0x08xxxxxx*/
/* I 0x09xxxxxx*/
/* J 0x10xxxxxx*/
/* K 0x11xxxxxx*/
/* L 0x12xxxxxx*/
/* M 0x13xxxxxx*/
/* N 0x14xxxxxx*/
#define ERROR_NEGATIVE 0x14050701
/* O 0x15xxxxxx*/
/* P 0x16xxxxxx*/
#define ERROR_POLY_ORD 0x16151518
#define ERROR_PTR 0x16201800
/* Q 0x17xxxxxx*/
/* R 0x18xxxxxx*/
#define ERROR_RAND_SIGMA 0x18011909
#define ERROR_RESAMPLE_RATIO 0x18051801
#define ERROR_RESAMPLE_FRAC_DELAY 0x18050604
/* S 0x19xxxxxx*/
#define ERROR_SIZE 0x19092605
#define ERROR_SYM_TYPE 0x19251320
/* T 0x20xxxxxx*/
/* U 0x21xxxxxx*/
/* V 0x22xxxxxx*/
/* W 0x23xxxxxx*/
#define ERROR_WIN_TYPE 0x23092025
#define ERROR_WIN_SYM 0x23091925
/* X 0x24xxxxxx*/
/* Y 0x25xxxxxx*/
/* Z 0x26xxxxxx*/
#define DAT_DOUBLE 0
#define DAT_COMPLEX 1
#ifdef __cplusplus
extern "C" {
#endif
// Declare DSPL_API for Windows OS
#ifdef BUILD_LIB
#ifdef WIN_OS
#define DSPL_API __declspec(dllexport)
#endif // WIN_OS
#ifdef LINUX_OS
#define DSPL_API
#endif //LINUX_OS
void DSPL_API blas_dscal(int n, double a, double* x, int incx);
int DSPL_API dft (double* x, int n, complex_t *y);
int DSPL_API dft_cmplx (complex_t* x, int n, complex_t *y);
int DSPL_API fft_create ( fft_t *pfft, int n);
void DSPL_API fft_destroy (fft_t *pfft);
int DSPL_API fft_cmplx (complex_t *x, int n, fft_t* pfft, complex_t* y);
int DSPL_API fft_shift (double* x, int n, double* y);
#else //BUILD_LIB
typedef void (*p_blas_dscal)(int n, double a, double* x, int incx);
typedef int (*p_dft ) (double* x, int n, complex_t *y);
typedef int (*p_dft_cmplx ) (complex_t* x, int n, complex_t *y);
typedef int (*p_fft_create ) (fft_t *pfft, int n);
typedef void(*p_fft_destroy ) (fft_t *pfft);
typedef int (*p_fft_cmplx ) (complex_t *x, int n, fft_t* pfft, complex_t* y);
typedef int (*p_fft_shift ) (double* x, int n, double* y);
extern p_blas_dscal blas_dscal ;
extern p_dft dft ;
extern p_dft_cmplx dft_cmplx ;
extern p_fft_create fft_create ;
extern p_fft_destroy fft_destroy ;
extern p_fft_cmplx fft_cmplx ;
extern p_fft_shift fft_shift ;
#endif //BUILD_DLL
#ifdef __cplusplus
}
#endif
void* dspl_load();
void dspl_free(void* handle);
#endif //DSPL_H

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "dspl.h"
#define N 16
int main()
{
void* handle;
handle = dspl_load();
double x[N];
double a = 2.0;
for(int k = 0; k < N; k++)
x[k] = (double)k;
blas_dscal(N, a, x, 1);
for(int k = 0; k < N; k++)
printf("x[%2d] = %9.3f \n", k, x[k]);
// remember to free the resource
dspl_free(handle);
return 0;
}

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "dspl.h"
#define N 16
int main()
{
void* handle;
handle = dspl_load();
complex_t x[N];
complex_t y[N];
complex_t z[N];
for(int k = 0; k < N; k++)
{
RE(x[k]) = (double)k;
IM(x[k]) = 0.0;
}
dft_cmplx(x,N,y);
fft_t pfft;
memset(&pfft, 0, sizeof(fft_t));
//
fft_create(&pfft,N);
fft_cmplx(x, N, &pfft, z);
for(int k = 0; k < N; k++)
printf("y[%2d] = %9.3f%9.3f z[%2d] = %9.3f%9.3f \n", k, RE(y[k]), IM(y[k]), k, RE(z[k]), IM(z[k]));
fft_destroy(&pfft);
// remember to free the resource
dspl_free(handle);
return 0;
}