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avcodec/cos_tablegen: use M_PI instead of actual literal

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Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
This commit is contained in:
Ganesh Ajjanagadde 2015-11-10 22:26:25 -05:00
parent 94565f3791
commit 824ba897bd
1 changed files with 3 additions and 1 deletions
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4
libavcodec/cos_tablegen.c
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@ -24,6 +24,8 @@
#include <string.h> #include <string.h>
#include <math.h> #include <math.h>
#include "libavutil/mathematics.h"
#define BITS 16 #define BITS 16
#define FLOATFMT "%.18e" #define FLOATFMT "%.18e"
#define FIXEDFMT "%6d" #define FIXEDFMT "%6d"
@ -61,7 +63,7 @@ int main(int argc, char *argv[])
printf("#include \"libavcodec/%s\"\n", do_sin ? "rdft.h" : "fft.h"); printf("#include \"libavcodec/%s\"\n", do_sin ? "rdft.h" : "fft.h");
for (i = 4; i <= BITS; i++) { for (i = 4; i <= BITS; i++) {
int m = 1 << i; int m = 1 << i;
double freq = 2*3.14159265358979323846/m; double freq = 2*M_PI/m;
printf("%s(%i) = {\n ", do_sin ? "SINTABLE" : "COSTABLE", m); printf("%s(%i) = {\n ", do_sin ? "SINTABLE" : "COSTABLE", m);
for (j = 0; j < m/2 - 1; j++) { for (j = 0; j < m/2 - 1; j++) {
int idx = j > m/4 ? m/2 - j : j; int idx = j > m/4 ? m/2 - j : j;