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https://github.com/deater/dos33fsprogs.git
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42 lines
751 B
C
42 lines
751 B
C
#include <stdio.h>
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#include <math.h>
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int generate_1024=0;
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//double sin_max=256.0;
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double sin_max=128.0;
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int main(int argc, char **argv) {
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int i;
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double s,angle;
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if (generate_1024) {
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printf("int16_t sin1024[]={\n");
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for(i=0;i<1024;i++) {
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angle=(i/1024.0)*(2.0*3.1415926535897932384);
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s=sin(angle)*sin_max;
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printf("%d,",(int)s);
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if (i%16==15) printf("\n");
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}
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printf("};\n");
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} else {
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if (sin_max<200) {
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printf("int8_t sin256[]={\n");
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}
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else {
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printf("int16_t sin256[]={\n");
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}
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for(i=0;i<256;i++) {
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angle=(i/256.0)*(2.0*3.1415926535897932384);
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s=sin(angle)*sin_max;
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if ( ((int)s)>=((int)sin_max) ) s=s-1;
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printf("%d,",(int)s);
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if (i%16==15) printf("\n");
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}
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printf("};\n");
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}
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return 0;
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}
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