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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_logf.c
parent86421aa57ecfd70963ae66848bd6a6dd3b8e0fe6 (diff)
downloadglibc-abfbdde177c3a7155070dda1b2cdc8292054cc26.tar.gz
Update.
Diffstat (limited to 'math/w_logf.c')
-rw-r--r--math/w_logf.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/math/w_logf.c b/math/w_logf.c
new file mode 100644
index 0000000000..9eabe4b34c
--- /dev/null
+++ b/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)