mkostemp: fix implementation

[uclinux-h8/uClibc.git] / libm / s_finite.c

diff --git a/libm/s_finite.c b/libm/s_finite.c
index 70b9aad..9bbc002 100644 (file)
--- a/libm/s_finite.c
+++ b/libm/s_finite.c
@@ -1,4 +1,3 @@
-/* @(#)s_finite.c 5.1 93/09/24 */
 /*
  * ====================================================
  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
@@ -10,29 +9,24 @@
  * ====================================================
  */
 
-#if defined(LIBM_SCCS) && !defined(lint)
-static char rcsid[] = "$NetBSD: s_finite.c,v 1.8 1995/05/10 20:47:17 jtc Exp $";
-#endif
-
 /*
  * finite(x) returns 1 is x is finite, else 0;
  * no branching!
  */
 
+#include <features.h>
+/* Prevent math.h from defining a colliding inline */
+#undef __USE_EXTERN_INLINES
 #include "math.h"
 #include "math_private.h"
 
-#ifdef __STDC__
-       int __finite(double x)
-#else
-       int __finite(x)
-       double x;
-#endif
+int __finite(double x)
 {
-       int32_t hx;
-       GET_HIGH_WORD(hx,x);
-       return (int)((u_int32_t)((hx&0x7fffffff)-0x7ff00000)>>31);
+       u_int32_t hx;
+
+       GET_HIGH_WORD(hx, x);
+       /* Finite numbers have at least one zero bit in exponent. */
+       /* All other numbers will result in 0xffffffff after OR: */
+       return (hx | 0x800fffff) != 0xffffffff;
 }
-libm_hidden_proto(finite)
-strong_alias(__finite,finite)
-libm_hidden_def(finite)
+libm_hidden_def(__finite)