45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <inttypes.h>
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#include <math.h>
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#include <libfixmath/fixmath.h>
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int main(int argc, char** argv) {
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FILE* fp = fopen("fix16_trig_sin_lut.h", "wb");
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if(fp == NULL) {
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fprintf(stderr, "Error: Unable to open file for writing.\n");
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return EXIT_FAILURE;
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}
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// TODO - Store as uint16_t with a count to determine the end and return 1.
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fprintf(fp, "#ifndef __fix16_trig_sin_lut_h__\n");
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fprintf(fp, "#define __fix16_trig_sin_lut_h__\n");
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fprintf(fp, "\n");
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fix16_t fix16_sin_lut_count = (fix16_pi >> 1);
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fix16_t fix16_sin_lut[fix16_sin_lut_count];
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uintptr_t i;
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for(i = 0; i < fix16_sin_lut_count; i++)
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fix16_sin_lut[i] = fix16_from_dbl(sin(fix16_to_dbl(i)));
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for(i--; fix16_sin_lut[i] == fix16_one; i--, fix16_sin_lut_count--);
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fprintf(fp, "static const uint32_t _fix16_sin_lut_count = %"PRIi32";\n", fix16_sin_lut_count);
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fprintf(fp, "static uint16_t _fix16_sin_lut[%"PRIi32"] = {", fix16_sin_lut_count);
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for(i = 0; i < fix16_sin_lut_count; i++) {
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if((i & 7) == 0)
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fprintf(fp, "\n\t");
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fprintf(fp, "%"PRIi32", ", fix16_sin_lut[i]);
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}
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fprintf(fp, "\n\t};\n");
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fprintf(fp, "\n");
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fprintf(fp, "#endif\n");
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fclose(fp);
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return EXIT_SUCCESS;
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}
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