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glslang tests: Get same form of IEEE INF across platforms. Submitted by Lei Zhang (antiagainst@google.com) and David Neto (dneto@google.com).

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git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@31210 e7fa87d3-cd2b-0410-9028-fcbf551c1848
This commit is contained in:
John Kessenich 2015-05-15 20:26:13 +00:00
parent b38c969e34
commit e7cbfa5cab
3 changed files with 34 additions and 8 deletions
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34
glslang/MachineIndependent/intermOut.cpp
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@ -37,6 +37,24 @@
#include "localintermediate.h"
#include "../Include/InfoSink.h"
#ifdef _MSC_VER
#include <float.h>
#else
#include <math.h>
#endif
namespace {
bool is_positive_infinity(double x) {
#ifdef _MSC_VER
return _fpclass(x) == _FPCLASS_PINF;
#else
return isinf(x) && (x >= 0);
#endif
}
}
namespace glslang {
//
@ -441,11 +459,19 @@ void OutputConstantUnion(TInfoSink& out, const TIntermTyped* node, const TConstU
case EbtFloat:
case EbtDouble:
{
const int maxSize = 300;
char buf[maxSize];
snprintf(buf, maxSize, "%f", constUnion[i].getDConst());
const double value = constUnion[i].getDConst();
// Print infinity in a portable way, for test stability.
// Other cases may be needed in the future: negative infinity,
// and NaNs.
if (is_positive_infinity(value))
out.debug << "inf\n";
else {
const int maxSize = 300;
char buf[maxSize];
snprintf(buf, maxSize, "%f", value);
out.debug << buf << "\n";
out.debug << buf << "\n";
}
}
break;
case EbtInt: