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diff src/build-msvctools/math/isnanf.c @ 3061:f8299bb6c872

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Initial support for native MSVC compilation. * add MSVC support files: compiler wrappers and support libraries * adapt libiconv to work with MSVC * adapt gettext to work with MSVC
author Michael Goffioul <michael.goffioul@gmail.com>
date Mon, 17 Jun 2013 22:43:11 -0400
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/build-msvctools/math/isnanf.c	Mon Jun 17 22:43:11 2013 -0400
@@ -0,0 +1,12 @@
+#include <math.h>
+int
+__isnanf (float _x)
+{
+  unsigned short _sw;
+  __asm__ ("fxam;"
+	   "fstsw %%ax": "=a" (_sw) : "t" (_x) );
+  return (_sw & (FP_NAN | FP_NORMAL | FP_INFINITE | FP_ZERO | FP_SUBNORMAL))
+    == FP_NAN;
+}
+
+int __attribute__ ((alias ("__isnanf"))) isnanf (float);