* Makefile.shared: New file.

	* libc/sys/linux/shared.ld: New file.
	* libm/machine/*: New files.
	* libm/machine/i386/*: New files.
	* Makefile.am: Add libtool support.  Change math and mathfp
	references to variables.
	* configure.host: Add variables for libtool support.  Add
	libm_machine_dir variable.
	* configure.in: Add objectlist variables, for libtool
	support.  Add CC_FOR_BUILD tests.
	* libc/Makefile.am: Add libtool support.  Change crt0.o
	reference to be a variable reference.
	* libc/configure.in: Add libtool support.  Change sublib
	names to be lib${subdir}.la when using libtool.
	* libc/ctype/Makefile.am: Add libtool support.
	* libc/errno/Makefile.am: Likewise.
	* libc/locale/Makefile.am: Likewise.
	* libc/machine/Makefile.am: Likewise.
	* libc/machine/configure.in: Likewise.
	* libc/machine/i386/Makefile.am: Likewise.
	* libc/machine/i386/configure.in: Likewise.
	* libc/misc/Makefile.am: Likewise.
	* libc/posix/Makefile.am: Likewise.
	* libc/reent/Makefile.am: Likewise.
	* libc/signal/Makefile.am: Likewise.
	* libc/stdio/Makefile.am: Likewise.
	* libc/stdlib/Makefile.am: Likewise.
	* libc/string/Makefile.am: Likewise.
	* libc/sys/Makefile.am: Likewise.
	* libc/sys/configure.in: Likewise.
	* libc/sys/linux/Makefile.am: Add libtool support.  Change
	awk reference to a variable reference.  Change signal.h
	reference to a variable reference.
	* libc/sys/linux/configure.in: Add libtool support.
	* libc/syscalls/Makefile.am: Likewise.
	* libc/time/Makefile.am: Likewise.
	* libc/unix/Makefile.am: Likewise.
	* libm/Makefile.am: Add libtool support.  Change math and
	mathfp references to variables.
	* libm/configure.in: Add libtool support.  Add
	LIBM_MACHINE_LIB variable.
	* libm/common/Makefile.am: Add libtool support.
	* libm/math/Makefile.am: Likewise.
	* libm/mathfp/Makefile.am: Likewise.
	Regenerate all Makefile.in, aclocal.m4, and configure.

1 files changed, 45 insertions, 0 deletions

diff --git a/newlib/libm/machine/i386/f_expf.c b/newlib/libm/machine/i386/f_expf.c
new file mode 100644
index 000000000..438772764
--- /dev/null
+++ b/newlib/libm/machine/i386/f_expf.c
@@ -0,0 +1,45 @@
+/*
+ * ====================================================
+ * Copyright (C) 1998 by Cygnus Solutions. All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+
+/*
+Fast version of exp using Intel float instructions.
+
+   float _f_expf (float x);
+
+Function computes e ** x.  The following special cases exist:
+   1. if x is 0.0 ==> return 1.0
+   2. if x is infinity ==> return infinity
+   3. if x is -infinity ==> return 0.0
+   4. if x is NaN ==> return x
+There is no error checking or setting of errno.
+*/
+
+
+#include <math.h>
+#include <ieeefp.h>
+#include "f_math.h"
+
+float _f_expf (float x)
+{
+   if (check_finitef(x))
+     {
+       float result;
+       asm ("fldl2e; fmulp; fld %%st; frndint; fsub %%st,%%st(1); fxch;" \
+          "fchs; f2xm1; fld1; faddp; fxch; fld1; fscale; fstp %%st(1); fmulp" :
+          "=t"(result) : "0"(x));
+       return result;
+     }
+   else if (x == -infinityf())
+     return 0.0;
+
+   return x;
+}
+
+