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authorRoland McGrath <roland@gnu.org>1996-03-05 21:41:30 +0000
committerRoland McGrath <roland@gnu.org>1996-03-05 21:41:30 +0000
commitf7eac6eb504f4baf13dbb4d26717942df050ebe6 (patch)
tree95ff129c06c7f6f246a5e2bfa489ba6382659d19 /sysdeps/libm-ieee754/w_logf.c
parent1521668f2afae1dc2ef5d7ffaeb84353b36874dd (diff)
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Mon Mar 4 20:54:40 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* Makeconfig ($(common-objpfx)config.make): Depend on config.h.in. Mon Mar 4 17:35:09 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu> * hurd/catch-signal.c (hurd_safe_memmove): New function. (hurd_safe_copyin, hurd_safe_copyout): New functions. * hurd/hurd/sigpreempt.h: Declare them. Sun Mar 3 08:43:44 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu> Replace math code with fdlibm from Sun as modified for netbsd by JT Conklin and Ian Taylor, including x86 FPU support. * sysdeps/libm-ieee754, sysdeps/libm-i387: New directories. * math/math_private.h: New file. * sysdeps/i386/fpu/Implies: New file. * sysdeps/ieee754/Implies: New file. * math/machine/asm.h, math/machine/endian.h: New files. * math/Makefile, math/math.h: Rewritten. * mathcalls.h, math/mathcalls.h: New file, broken out of math.h. * math/finite.c: File removed. * sysdeps/generic/Makefile [$(subdir)=math]: Frobnication removed. * math/test-math.c: Include errno.h and string.h. * sysdeps/unix/bsd/dirstream.h: File removed. * sysdeps/unix/bsd/readdir.c: File removed.
Diffstat (limited to 'sysdeps/libm-ieee754/w_logf.c')
-rw-r--r--sysdeps/libm-ieee754/w_logf.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/sysdeps/libm-ieee754/w_logf.c b/sysdeps/libm-ieee754/w_logf.c
new file mode 100644
index 0000000000..9eabe4b34c
--- /dev/null
+++ b/sysdeps/libm-ieee754/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)