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authorUlrich Drepper <drepper@redhat.com>1999-07-14 00:54:57 +0000
committerUlrich Drepper <drepper@redhat.com>1999-07-14 00:54:57 +0000
commitabfbdde177c3a7155070dda1b2cdc8292054cc26 (patch)
treee021306b596381fbf8311d2b7eb294e918ff17c8 /math/w_exp10f.c
parent86421aa57ecfd70963ae66848bd6a6dd3b8e0fe6 (diff)
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Diffstat (limited to 'math/w_exp10f.c')
-rw-r--r--math/w_exp10f.c57
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diff --git a/math/w_exp10f.c b/math/w_exp10f.c
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+/* w_exp10f.c -- float version of w_exp10.c.
+ * Conversion to exp10 by Ulrich Drepper <drepper@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.
+ * ====================================================
+ */
+
+/*
+ * wrapper expf10(x)
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+#ifdef __STDC__
+static const float
+#else
+static float
+#endif
+o_threshold=  3.853183944498959298709e+01,
+u_threshold= -4.515449934959717928174e+01;
+
+#ifdef __STDC__
+	float __exp10f(float x)		/* wrapper exp10f */
+#else
+	float __exp10f(x)			/* wrapper exp10f */
+	float x;
+#endif
+{
+#ifdef _IEEE_LIBM
+	return __ieee754_exp10f(x);
+#else
+	float z;
+	z = __ieee754_exp10f(x);
+	if(_LIB_VERSION == _IEEE_) return z;
+	if(__finitef(x)) {
+	    if(x>o_threshold)
+	        /* exp overflow */
+	        return (float)__kernel_standard((double)x,(double)x,146);
+	    else if(x<u_threshold)
+	        /* exp underflow */
+	        return (float)__kernel_standard((double)x,(double)x,147);
+	}
+	return z;
+#endif
+}
+weak_alias (__exp10f, exp10f)
+strong_alias (__exp10f, __pow10f)
+weak_alias (__pow10f, pow10f)