[Bf-blender-cvs] [539a61b] master: Code cleanup: Use generic isnan() function instead of own ifdef

[Sergey Sharybin]

Commit: 539a61bce22f2a4c0dd10a4430c9af257a710d2d
Author: Sergey Sharybin
Date:   Fri Oct 10 02:04:36 2014 +0600
Branches: master
https://developer.blender.org/rB539a61bce22f2a4c0dd10a4430c9af257a710d2d

Code cleanup: Use generic isnan() function instead of own ifdef

===================================================================

M	source/blender/render/intern/source/imagetexture.c

===================================================================

diff --git a/source/blender/render/intern/source/imagetexture.c b/source/blender/render/intern/source/imagetexture.c
index 1270109..2787ce9 100644
--- a/source/blender/render/intern/source/imagetexture.c
+++ b/source/blender/render/intern/source/imagetexture.c
@@ -791,14 +791,6 @@ static void area_sample(TexResult *texr, ImBuf *ibuf, float fx, float fy, afdata
 	texr->ta = texr->talpha ? texr->ta*xsd : (clip ? cw*xsd : 1.f);
 }
 
-/* test if a float value is 'nan'
- * there is a C99 function for this: isnan(), but blender seems to use C90 (according to gcc warns),
- * and may not be supported by other compilers either */
-/* TODO(sergey): Consider using isnan(), it's used in the other areas. */
-#ifndef ISNAN
-#  define ISNAN(x) ((x) != (x))
-#endif
-
 typedef struct ReadEWAData {
 	ImBuf *ibuf;
 	afdata_t *AFD;
@@ -1212,7 +1204,7 @@ static int imagewraposa_aniso(Tex *tex, Image *ima, ImBuf *ibuf, const float tex
 			if (tex->texfilter == TXF_FELINE) AFD.iProbes = 1;
 		}
 		else {
-			const int lev = ISNAN(levf) ? 0 : (int)levf;
+			const int lev = isnan(levf) ? 0 : (int)levf;
 			curibuf = mipmaps[lev];
 			previbuf = mipmaps[lev + 1];
 			levf -= floorf(levf);