30 lines
634 B
C
30 lines
634 B
C
// Example sine lut generator
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#include <stdio.h>
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#include <math.h>
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#define M_PI 3.1415926535f
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#define SIN_SIZE 512
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#define SIN_FP 12
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int main()
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{
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int ii;
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FILE *fp= fopen("sinlut.c", "w");
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unsigned short hw;
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fprintf(fp, "//\n// Sine lut; %d entries, %d fixeds\n//\n\n",
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SIN_SIZE, SIN_FP);
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fprintf(fp, "const short sin_lut[%d]=\n{", SIN_SIZE);
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for(ii=0; ii<SIN_SIZE; ii++)
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{
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hw= (unsigned short)(sin(ii*2*M_PI/SIN_SIZE)*(1<<SIN_FP));
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if(ii%8 == 0)
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fputs("\n\t", fp);
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fprintf(fp, "0x%04X, ", hw);
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}
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fputs("\n};\n", fp);
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fclose(fp);
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return 0;
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}
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