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authorJason Ekstrand <[email protected]>2015-01-28 12:42:47 -0800
committerJason Ekstrand <[email protected]>2015-01-28 13:20:26 -0800
commit7ac79eea1a621f5cd27c3b052aeea3df1aa4cd99 (patch)
tree0a843827c21cee3d3d4e69680429e22d98981fa4 /src/mesa
parentf0340ff625aa27c6470fe82e6c1bb04bf592bbe4 (diff)
Revert "util: Move the alternate fpclassify implementation to util"
This reverts commits d6eb572905e39c36168b8f5da240af961f9dde0a and 58e8468d113c7d3d4a59ea4a8d70fd45b78e85e6. This is no longer necessary as we aren't using it in NIR anymore. Also, it broke the build on some strange systems so let's put it back in querymatrix where it came from. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88852 Acked-by: Matt Turner <[email protected]>
Diffstat (limited to 'src/mesa')
-rw-r--r--src/mesa/main/querymatrix.c51
1 files changed, 50 insertions, 1 deletions
diff --git a/src/mesa/main/querymatrix.c b/src/mesa/main/querymatrix.c
index d2d643be0e4..ef85175714d 100644
--- a/src/mesa/main/querymatrix.c
+++ b/src/mesa/main/querymatrix.c
@@ -17,7 +17,6 @@
#include "glheader.h"
#include "querymatrix.h"
#include "main/get.h"
-#include "util/macros.h"
/**
@@ -38,6 +37,56 @@
#define INT_TO_FIXED(x) ((GLfixed) ((x) << 16))
#define FLOAT_TO_FIXED(x) ((GLfixed) ((x) * 65536.0))
+#if defined(fpclassify)
+/* ISO C99 says that fpclassify is a macro. Assume that any implementation
+ * of fpclassify, whether it's in a C99 compiler or not, will be a macro.
+ */
+#elif defined(_MSC_VER)
+/* Not required on VS2013 and above. */
+/* Oddly, the fpclassify() function doesn't exist in such a form
+ * on MSVC. This is an implementation using slightly different
+ * lower-level Windows functions.
+ */
+#include <float.h>
+
+enum {FP_NAN, FP_INFINITE, FP_ZERO, FP_SUBNORMAL, FP_NORMAL}
+fpclassify(double x)
+{
+ switch(_fpclass(x)) {
+ case _FPCLASS_SNAN: /* signaling NaN */
+ case _FPCLASS_QNAN: /* quiet NaN */
+ return FP_NAN;
+ case _FPCLASS_NINF: /* negative infinity */
+ case _FPCLASS_PINF: /* positive infinity */
+ return FP_INFINITE;
+ case _FPCLASS_NN: /* negative normal */
+ case _FPCLASS_PN: /* positive normal */
+ return FP_NORMAL;
+ case _FPCLASS_ND: /* negative denormalized */
+ case _FPCLASS_PD: /* positive denormalized */
+ return FP_SUBNORMAL;
+ case _FPCLASS_NZ: /* negative zero */
+ case _FPCLASS_PZ: /* positive zero */
+ return FP_ZERO;
+ default:
+ /* Should never get here; but if we do, this will guarantee
+ * that the pattern is not treated like a number.
+ */
+ return FP_NAN;
+ }
+}
+
+#else
+
+enum {FP_NAN, FP_INFINITE, FP_ZERO, FP_SUBNORMAL, FP_NORMAL}
+fpclassify(double x)
+{
+ /* XXX do something better someday */
+ return FP_NORMAL;
+}
+
+#endif
+
GLbitfield GLAPIENTRY _mesa_QueryMatrixxOES(GLfixed mantissa[16], GLint exponent[16])
{
GLfloat matrix[16];