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diff src/build-msvctools/math/nextafterf.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/nextafterf.c	Mon Jun 17 22:43:11 2013 -0400
@@ -0,0 +1,27 @@
+#include <math.h>
+
+float
+nextafterf (float x, float y)
+{
+  union
+  {
+    float f;
+    unsigned int i;
+  } u;
+  if (isnan (y) || isnan (x))
+    return x + y;
+  if (x == y )
+     /* nextafter (0.0, -O.0) should return -0.0.  */
+     return y;
+  u.f = x; 
+  if (x == 0.0F)
+    {
+      u.i = 1;
+      return y > 0.0F ? u.f : -u.f;
+    }
+  if (((x > 0.0F) ^ (y > x)) == 0)
+    u.i++;
+  else
+    u.i--;
+  return u.f;
+}