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Fix more instances of incorrect PI constants

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This commit is contained in:
Matt Pharr
2011-06-22 05:27:56 -07:00
parent a3fbb098ad
commit 6086d3597c
2 changed files with 3 additions and 3 deletions
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2
module.cpp
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@@ -184,7 +184,7 @@ Module::CompileFile() {
FATAL("Need to implement code to run the preprocessor for windows");
#else // ISPC_IS_WINDOWS
char *cmd = NULL;
if (asprintf(&cmd, "/usr/bin/cpp -DISPC=1 -DPI=3.1415936535 %s %s",
if (asprintf(&cmd, "/usr/bin/cpp -DISPC=1 -DPI=3.1415926536 %s %s",
cppDefs.c_str(), filename ? filename : "-") == -1) {
fprintf(stderr, "Unable to allocate memory in asprintf()?!\n");
exit(1);

4
stdlib.ispc
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@@ -1087,8 +1087,8 @@ static inline float atan2(float y, float x) {
}
else if (__math_lib == __math_lib_ispc ||
__math_lib == __math_lib_ispc_fast) {
const float pi_vec = 3.1415927410125732421875;
const float pi_over_two_vec = 1.57079637050628662109375;
const float pi_vec = 3.1415926536;
const float pi_over_two_vec = 1.5707963267;
// atan2(y, x) =
//
// atan2(y > 0, x = +-0) -> Pi/2