mesa: move math-related function into new c99_math.h file

The alternative would be to include math.h in c99_compat.h but that
seems heavy-handed.

This patch also replaces INLINE with inline in the c99 math function
wrappers.

Fixes MSVC build.

Acked-by: Matt Turner <mattst88@gmail.com>

1 files changed, 184 insertions, 0 deletions

diff --git a/include/c99_math.h b/include/c99_math.h
new file mode 100644
index 00000000000..6680f540db3
--- /dev/null
+++ b/include/c99_math.h
@@ -0,0 +1,184 @@
+/**************************************************************************
+ *
+ * Copyright 2007-2015 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+/**
+ * Wrapper for math.h which makes sure we have definitions of all the c99
+ * functions.
+ */
+
+
+#ifndef _C99_MATH_H_
+#define _C99_MATH_H_
+
+#include <math.h>
+#include "c99_compat.h"
+
+
+#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 /* #define _C99_MATH_H_ */