#include <algorithm>
#include <cassert>
+#ifdef _MSC_VER
+#include <cfloat>
+#else
+#include <cmath>
+#endif
#include <cstdio>
#include <cstdlib>
#include <list>
return result;
}
+inline bool IsInfinity(double x) {
+#ifdef _MSC_VER
+ switch (_fpclass(x)) {
+ case _FPCLASS_NINF:
+ case _FPCLASS_PINF:
+ return true;
+ default:
+ return false;
+ }
+#else
+ return std::isinf(x);
+#endif
+}
+
+inline bool IsNan(double x) {
+#ifdef _MSC_VER
+ switch (_fpclass(x)) {
+ case _FPCLASS_SNAN:
+ case _FPCLASS_QNAN:
+ return true;
+ default:
+ return false;
+ }
+#else
+ return std::isnan(x);
+#endif
+}
+
} // end namespace glslang
#endif // _COMMON_INCLUDED_
using namespace glslang;
-typedef union {
- double d;
- int i[2];
-} DoubleIntUnion;
-
-// Some helper functions
-
-bool isNan(double x)
-{
- DoubleIntUnion u;
- // tough to find a platform independent library function, do it directly
- u.d = x;
- int bitPatternL = u.i[0];
- int bitPatternH = u.i[1];
- return (bitPatternH & 0x7ff80000) == 0x7ff80000 &&
- ((bitPatternH & 0xFFFFF) != 0 || bitPatternL != 0);
-}
-
-bool isInf(double x)
-{
- DoubleIntUnion u;
- // tough to find a platform independent library function, do it directly
- u.d = x;
- int bitPatternL = u.i[0];
- int bitPatternH = u.i[1];
- return (bitPatternH & 0x7ff00000) == 0x7ff00000 &&
- (bitPatternH & 0xFFFFF) == 0 && bitPatternL == 0;
-}
-
const double pi = 3.1415926535897932384626433832795;
} // end anonymous namespace
case EOpIsNan:
{
- newConstArray[i].setBConst(isNan(unionArray[i].getDConst()));
+ newConstArray[i].setBConst(IsNan(unionArray[i].getDConst()));
break;
}
case EOpIsInf:
{
- newConstArray[i].setBConst(isInf(unionArray[i].getDConst()));
+ newConstArray[i].setBConst(IsInfinity(unionArray[i].getDConst()));
break;
}