/usr/share/stk/rawwaves/makefunc.c is in stk 4.4.4-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/** Utility to make various functions **/
/** like exponential and log gain curves. **/
/** **/
/** Included here: **/
/** Yamaha TX81Z curves for master gain, **/
/** Envelope Rates (in normalized units), **/
/** envelope sustain level, and more.... **/
/**********************************************/
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
void main()
{
int i,j;
double temp;
double data[128];
/*************** TX81Z Master Gain *************/
for (i=0;i<100;i++) {
data[i] = pow(2.0,-(99-i)/10.0);
}
data[0] = 0.0;
printf("double __FM4Op_gains[99] = {");
for (i=0;i<100;i++) {
if (i%8 == 0) printf("\n");
printf("%lf,",data[i]);
}
printf("};\n");
/*************** TX81Z Sustain Level ***********/
for (i=0;i<16;i++) {
data[i] = pow(2.0,-(15-i)/2.0);
}
data[0] = 0.0;
printf("double __FM4Op_susLevels[16] = {");
for (i=0;i<16;i++) {
if (i%8 == 0) printf("\n");
printf("%lf,",data[i]);
}
printf("};\n");
/****************** Attack Rate ***************/
for (i=0;i<32;i++) {
data[i] = 6.0 * pow(5.7,-(i-1)/5.0);
}
printf("double __FM4Op_attTimes[16] = {");
for (i=0;i<32;i++) {
if (i%8 == 0) printf("\n");
printf("%lf,",data[i]);
}
printf("};\n");
exit(1);
}
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