1 files changed, 143 insertions, 0 deletions
diff --git a/include/c99_compat.h b/include/c99_compat.h
index e5d0ae43a50..5852015491b 100644
--- a/include/c99_compat.h
+++ b/include/c99_compat.h
@@ -138,4 +138,147 @@ test_c99_compat_h(const void * restrict a,
 #endif
 
 
+#if defined(_MSC_VER)
+
+#if _MSC_VER < 1400 && !defined(__cplusplus)
+
+static INLINE float cosf( float f )
+{
+   return (float) cos( (double) f );
+}
+
+static INLINE float sinf( float f )
+{
+   return (float) sin( (double) f );
+}
+
+static INLINE float ceilf( float f )
+{
+   return (float) ceil( (double) f );
+}
+
+static INLINE float floorf( float f )
+{
+   return (float) floor( (double) f );
+}
+
+static INLINE float powf( float f, float g )
+{
+   return (float) pow( (double) f, (double) g );
+}
+
+static INLINE float sqrtf( float f )
+{
+   return (float) sqrt( (double) f );
+}
+
+static INLINE float fabsf( float f )
+{
+   return (float) fabs( (double) f );
+}
+
+static INLINE float logf( float f )
+{
+   return (float) log( (double) f );
+}
+
+#else
+/* Work-around an extra semi-colon in VS 2005 logf definition */
+#ifdef logf
+#undef logf
+#define logf(x) ((float)log((double)(x)))
+#endif /* logf */
+
+#if _MSC_VER < 1800
+#define isfinite(x) _finite((double)(x))
+#define isnan(x) _isnan((double)(x))
+#endif /* _MSC_VER < 1800 */
+#endif /* _MSC_VER < 1400 && !defined(__cplusplus) */
+
+#if _MSC_VER < 1800
+static INLINE double log2( double x )
+{
+   const double invln2 = 1.442695041;
+   return log( x ) * invln2;
+}
+
+static INLINE double
+round(double x)
+{
+   return x >= 0.0 ? floor(x + 0.5) : ceil(x - 0.5);
+}
+
+static INLINE float
+roundf(float x)
+{
+   return x >= 0.0f ? floorf(x + 0.5f) : ceilf(x - 0.5f);
+}
+#endif
+
+#ifndef INFINITY
+#define INFINITY (DBL_MAX + DBL_MAX)
+#endif
+
+#ifndef NAN
+#define NAN (INFINITY - INFINITY)
+#endif
+
+#endif /* _MSC_VER */
+
+
+#if __STDC_VERSION__ < 199901L && (!defined(__cplusplus) || defined(_MSC_VER))
+static INLINE long int
+lrint(double d)
+{
+   long int rounded = (long int)(d + 0.5);
+
+   if (d - floor(d) == 0.5) {
+      if (rounded % 2 != 0)
+         rounded += (d > 0) ? -1 : 1;
+   }
+
+   return rounded;
+}
+
+static INLINE long int
+lrintf(float f)
+{
+   long int rounded = (long int)(f + 0.5f);
+
+   if (f - floorf(f) == 0.5f) {
+      if (rounded % 2 != 0)
+         rounded += (f > 0) ? -1 : 1;
+   }
+
+   return rounded;
+}
+
+static INLINE long long int
+llrint(double d)
+{
+   long long int rounded = (long long int)(d + 0.5);
+
+   if (d - floor(d) == 0.5) {
+      if (rounded % 2 != 0)
+         rounded += (d > 0) ? -1 : 1;
+   }
+
+   return rounded;
+}
+
+static INLINE long long int
+llrintf(float f)
+{
+   long long int rounded = (long long int)(f + 0.5f);
+
+   if (f - floorf(f) == 0.5f) {
+      if (rounded % 2 != 0)
+         rounded += (f > 0) ? -1 : 1;
+   }
+
+   return rounded;
+}
+#endif /* C99 */
+
+
 #endif /* _C99_COMPAT_H_ */