kopia lustrzana https://github.com/rs1729/RS
36 wiersze
935 B
C
36 wiersze
935 B
C
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#include "rs_data.h"
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#include "rs_datum.h"
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char weekday[7][4] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
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//char weekday[7][3] = { "So", "Mo", "Di", "Mi", "Do", "Fr", "Sa"};
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/*
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* Convert GPS Week and Seconds to Modified Julian Day.
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* - Adapted from sci.astro FAQ.
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* - Ignores UTC leap seconds.
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*/
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//void Gps2Date(long GpsWeek, long GpsSeconds, int *Year, int *Month, int *Day) {
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void Gps2Date(rs_data_t *rs_data) {
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long GpsSeconds, GpsDays, Mjd;
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long J, C, Y, M;
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GpsSeconds = (rs_data->GPS).msec / 1000;
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GpsDays = (rs_data->GPS).week * 7 + (GpsSeconds / 86400);
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Mjd = 44244 + GpsDays;
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J = Mjd + 2468570;
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C = 4 * J / 146097;
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J = J - (146097 * C + 3) / 4;
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Y = 4000 * (J + 1) / 1461001;
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J = J - 1461 * Y / 4 + 31;
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M = 80 * J / 2447;
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rs_data->day = J - 2447 * M / 80;
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J = M / 11;
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rs_data->month = M + 2 - (12 * J);
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rs_data->year = 100 * (C - 49) + Y + J;
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}
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