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authorUlrich Drepper <drepper@redhat.com>2005-12-14 15:06:39 +0000
committerUlrich Drepper <drepper@redhat.com>2005-12-14 15:06:39 +0000
commit9d13fb2413921c713f83efe331e8e4d219c62c6b (patch)
tree2d44d7ac45ab2d147eb8361bbff880c365aa8ad5 /math/w_scalbf.c
parentb6ab06cef4670e02756bcdd4d2c33a49369a4346 (diff)
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Moved to csu/errno-loc.c.
Diffstat (limited to 'math/w_scalbf.c')
-rw-r--r--math/w_scalbf.c66
1 files changed, 66 insertions, 0 deletions
diff --git a/math/w_scalbf.c b/math/w_scalbf.c
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+/* w_scalbf.c -- float version of w_scalb.c.
+ * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
+ */
+
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+
+#if defined(LIBM_SCCS) && !defined(lint)
+static char rcsid[] = "$NetBSD: w_scalbf.c,v 1.3 1995/05/10 20:49:50 jtc Exp $";
+#endif
+
+/*
+ * wrapper scalbf(float x, float fn) is provide for
+ * passing various standard test suite. One
+ * should use scalbn() instead.
+ */
+
+#include <math.h>
+#include "math_private.h"
+
+#include <errno.h>
+
+#ifdef __STDC__
+#ifdef _SCALB_INT
+ float __scalbf(float x, int fn) /* wrapper scalbf */
+#else
+ float __scalbf(float x, float fn) /* wrapper scalbf */
+#endif
+#else
+ float __scalbf(x,fn) /* wrapper scalbf */
+#ifdef _SCALB_INT
+ float x; int fn;
+#else
+ float x,fn;
+#endif
+#endif
+{
+#ifdef _IEEE_LIBM
+ return __ieee754_scalbf(x,fn);
+#else
+ float z;
+ z = __ieee754_scalbf(x,fn);
+ if(_LIB_VERSION != _SVID_) return z;
+ if(!(__finitef(z)||__isnanf(z))&&__finitef(x)) {
+ /* scalbf overflow */
+ return (float)__kernel_standard((double)x,(double)fn,132);
+ }
+ if(z==(float)0.0&&z!=x) {
+ /* scalbf underflow */
+ return (float)__kernel_standard((double)x,(double)fn,133);
+ }
+#ifndef _SCALB_INT
+ if(!__finitef(fn)) __set_errno (ERANGE);
+#endif
+ return z;
+#endif
+}
+weak_alias (__scalbf, scalbf)