2.5-18.1

math/w_logf.c

@@ -0,0 +1,49 @@
+/* w_logf.c -- float version of w_log.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_logf.c,v 1.3 1995/05/10 20:49:40 jtc Exp $";
+#endif
+
+/*
+ * wrapper logf(x)
+ */
+
+#include <math.h>
+#include "math_private.h"
+
+
+#ifdef __STDC__
+	float __logf(float x)		/* wrapper logf */
+#else
+	float __logf(x)			/* wrapper logf */
+	float x;
+#endif
+{
+#ifdef _IEEE_LIBM
+	return __ieee754_logf(x);
+#else
+	float z;
+	z = __ieee754_logf(x);
+	if(_LIB_VERSION == _IEEE_ || __isnanf(x) || x > (float)0.0) return z;
+	if(x==(float)0.0)
+	    /* logf(0) */
+	    return (float)__kernel_standard((double)x,(double)x,116);
+	else 
+	    /* logf(x<0) */
+	    return (float)__kernel_standard((double)x,(double)x,117);
+#endif
+}
+weak_alias (__logf, logf)