2.5-18.1

1 files changed, 66 insertions, 0 deletions

diff --git a/math/w_scalbf.c b/math/w_scalbf.c
new file mode 100644
index 0000000000..60cb5670ed
--- /dev/null
+++ b/math/w_scalbf.c
@@ -0,0 +1,66 @@
+/* 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)