Update.

1998-06-09 18:16  Ulrich Drepper  <drepper@cygnus.com>

	* math/Makefile (libm-calls): Add w_exp10 and e_exp10.
	* math/libm.map: Add exp10{,f,l} and pow10{,f,l}.
	* math/math_private.h: Add prototypes for __ieee754_exp10{,f,l}.
	* math/bits/mathcalls.h: Add definitions for exp10 and pow10
	prototypes.
	* sysdeps/libm-i387/e_exp10.S: New file.
	* sysdeps/libm-i387/e_exp10f.S: New file.
	* sysdeps/libm-i387/e_exp10l.S: New file.
	* sysdeps/libm-ieee754/e_exp10.c: New file.
	* sysdeps/libm-ieee754/e_exp10f.c: New file.
	* sysdeps/libm-ieee754/e_exp10l.c: New file.
	* sysdeps/libm-ieee754/w_exp10.c: New file.
	* sysdeps/libm-ieee754/w_exp10f.c: New file.
	* sysdeps/libm-ieee754/w_exp10l.c: New file.
	* sysdeps/libm-ieee754/k_standard.c: Add exception code for exp10.

1998-05-25 22:18  H.J. Lu  <hjl@gnu.org>

	* sysdeps/unix/sysv/linux/i386/Makefile (sysdep_headers): Add
	sys/elf.h and sys/reg.h.
	* sysdeps/unix/sysv/linux/i386/sys/elf.h: New file.
	* sysdeps/unix/sysv/linux/i386/sys/reg.h: New file.
	* sysdeps/unix/sysv/linux/i386/sys/procfs.h: New file.
	* sysdeps/unix/sysv/linux/i386/sys/user.h: New file.

	* sysdeps/unix/sysv/linux/sys/ptrace.h (PTRACE_GETREGS,
	PTRACE_SETREGS, PTRACE_GETFPREGS, PTRACE_SETFPREGS): Added.

21 files changed, 788 insertions, 23 deletions

diff --git a/ChangeLog b/ChangeLog
index 059f9651f2..7436b40ef6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,33 @@
+1998-06-09 18:16  Ulrich Drepper  <drepper@cygnus.com>
+
+	* math/Makefile (libm-calls): Add w_exp10 and e_exp10.
+	* math/libm.map: Add exp10{,f,l} and pow10{,f,l}.
+	* math/math_private.h: Add prototypes for __ieee754_exp10{,f,l}.
+	* math/bits/mathcalls.h: Add definitions for exp10 and pow10
+	prototypes.
+	* sysdeps/libm-i387/e_exp10.S: New file.
+	* sysdeps/libm-i387/e_exp10f.S: New file.
+	* sysdeps/libm-i387/e_exp10l.S: New file.
+	* sysdeps/libm-ieee754/e_exp10.c: New file.
+	* sysdeps/libm-ieee754/e_exp10f.c: New file.
+	* sysdeps/libm-ieee754/e_exp10l.c: New file.
+	* sysdeps/libm-ieee754/w_exp10.c: New file.
+	* sysdeps/libm-ieee754/w_exp10f.c: New file.
+	* sysdeps/libm-ieee754/w_exp10l.c: New file.
+	* sysdeps/libm-ieee754/k_standard.c: Add exception code for exp10.
+
+1998-05-25 22:18  H.J. Lu  <hjl@gnu.org>
+
+	* sysdeps/unix/sysv/linux/i386/Makefile (sysdep_headers): Add
+	sys/elf.h and sys/reg.h.
+	* sysdeps/unix/sysv/linux/i386/sys/elf.h: New file.
+	* sysdeps/unix/sysv/linux/i386/sys/reg.h: New file.
+	* sysdeps/unix/sysv/linux/i386/sys/procfs.h: New file.
+	* sysdeps/unix/sysv/linux/i386/sys/user.h: New file.
+
+	* sysdeps/unix/sysv/linux/sys/ptrace.h (PTRACE_GETREGS,
+	PTRACE_SETREGS, PTRACE_GETFPREGS, PTRACE_SETFPREGS): Added.
+
 1998-06-09  Ulrich Drepper  <drepper@cygnus.com>
 
 	* sysdeps/unix/sysv/linux/netinet/ip.h (struct ip_options): Define
diff --git a/math/Makefile b/math/Makefile
index 103937e580..9f2d3367e5 100644
--- a/math/Makefile
+++ b/math/Makefile
@@ -48,15 +48,15 @@ libm-calls = e_acos e_acosh e_asin e_atan2 e_atanh e_cosh e_exp e_fmod	\
 	     s_floor s_frexp s_ilogb s_ldexp s_log1p s_logb 		\
 	     s_modf s_nextafter s_nextafterx s_rint s_scalbn s_scalbln	\
 	     s_significand s_sin s_tan s_tanh w_acos w_acosh w_asin	\
-	     w_atan2 w_atanh w_cosh w_drem w_exp w_exp2 w_fmod w_gamma	\
-	     w_hypot w_j0 w_j1 w_jn w_lgamma w_lgamma_r			\
+	     w_atan2 w_atanh w_cosh w_drem w_exp w_exp2 w_exp10 w_fmod	\
+	     w_gamma w_hypot w_j0 w_j1 w_jn w_lgamma w_lgamma_r		\
 	     w_log w_log10 w_pow w_remainder w_scalb w_sinh w_sqrt	\
 	     s_signbit s_fpclassify s_fmax s_fmin s_fdim s_nan s_trunc	\
 	     s_remquo s_log2 s_exp2 s_round s_nearbyint s_sincos	\
 	     conj cimag creal cabs carg s_cexp s_csinh s_ccosh s_clog	\
 	     s_catan s_casin s_ccos s_csin s_ctan s_ctanh s_cacos	\
 	     s_casinh s_cacosh s_catanh s_csqrt s_cpow s_cproj s_clog10 \
-	     s_fma s_lrint s_llrint s_lround s_llround
+	     s_fma s_lrint s_llrint s_lround s_llround e_exp10
 libm-routines = $(libm-support) $(libm-calls) \
 		$(patsubst %_rf,%f_r,$(libm-calls:=f))	\
 		$(long-m-$(long-double-fcts))
diff --git a/math/bits/mathcalls.h b/math/bits/mathcalls.h
index 3073f25be4..67e86a7d51 100644
--- a/math/bits/mathcalls.h
+++ b/math/bits/mathcalls.h
@@ -1,5 +1,5 @@
 /* Prototype declarations for math functions; helper file for <math.h>.
-   Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -39,7 +39,7 @@
    This is just like __MATHCALL but for a function returning `TYPE'
    instead of `_Mdouble_'.  In all of these cases, there is still
    both a `NAME' and a `NAMEf' that takes `float' arguments.
-   
+
    Note that there must be no whitespace before the argument passed for
    NAME, to make token pasting work with -traditional.  */
 
@@ -95,6 +95,13 @@ __MATHCALL (atanh,, (_Mdouble_ __x));
 /* Exponential function of X.  */
 __MATHCALL (exp,, (_Mdouble_ __x));
 
+#ifdef __USE_GNU
+/* A function missing in all standards: compute exponent to base ten.  */
+__MATHCALL (exp10,, (_Mdouble_ __x));
+/* Another name occasionally used.  */
+__MATHCALL (pow10,, (_Mdouble_ __x));
+#endif
+
 /* Break VALUE into a normalized fraction and an integral power of 2.  */
 __MATHCALL (frexp,, (_Mdouble_ __x, int *__exponent));
 
diff --git a/math/libm.map b/math/libm.map
index 9220171ae5..3fc4167213 100644
--- a/math/libm.map
+++ b/math/libm.map
@@ -72,6 +72,7 @@ GLIBC_2.1 {
 
     # mathematical functions
     exp2; exp2f; exp2l;
+    exp10; exp10f; exp10l;
     fdim; fdimf; fdiml;
     fma; fmaf; fmal;
     fmax; fmaxf; fmaxl;
@@ -80,6 +81,7 @@ GLIBC_2.1 {
     nan; nanf; nanl;
     nearbyint; nearbyintf; nearbyintl;
     nextafterx; nextafterxf; nextafterxl;
+    pow10; pow10f; pow10l;
     remquo; remquof; remquol;
     lrint; lrintf; lrintl;
     llrint; llrintf; llrintl;
diff --git a/math/math_private.h b/math/math_private.h
index 4b3b5be3bf..6d51930230 100644
--- a/math/math_private.h
+++ b/math/math_private.h
@@ -253,6 +253,7 @@ extern double __ieee754_asin __P((double));
 extern double __ieee754_atan2 __P((double,double));
 extern double __ieee754_exp __P((double));
 extern double __ieee754_exp2 __P((double));
+extern double __ieee754_exp10 __P((double));
 extern double __ieee754_cosh __P((double));
 extern double __ieee754_fmod __P((double,double));
 extern double __ieee754_pow __P((double,double));
@@ -292,6 +293,7 @@ extern float __ieee754_asinf __P((float));
 extern float __ieee754_atan2f __P((float,float));
 extern float __ieee754_expf __P((float));
 extern float __ieee754_exp2f __P((float));
+extern float __ieee754_exp10f __P((float));
 extern float __ieee754_coshf __P((float));
 extern float __ieee754_fmodf __P((float,float));
 extern float __ieee754_powf __P((float,float));
@@ -330,6 +332,7 @@ extern long double __ieee754_asinl __P((long double));
 extern long double __ieee754_atan2l __P((long double,long double));
 extern long double __ieee754_expl __P((long double));
 extern long double __ieee754_exp2l __P((long double));
+extern long double __ieee754_exp10l __P((long double));
 extern long double __ieee754_coshl __P((long double));
 extern long double __ieee754_fmodl __P((long double,long double));
 extern long double __ieee754_powl __P((long double,long double));
diff --git a/sysdeps/libm-i387/e_exp10.S b/sysdeps/libm-i387/e_exp10.S
new file mode 100644
index 0000000000..6bfcdbb723
--- /dev/null
+++ b/sysdeps/libm-i387/e_exp10.S
@@ -0,0 +1,38 @@
+/*
+ * Written by Ulrich Drepper <drepper@cygnus.com>.
+ */
+
+#include <machine/asm.h>
+
+/* 10^x = 2^(x * log2(10)) */
+ENTRY(__ieee754_exp10)
+	fldl	4(%esp)
+/* I added the following ugly construct because exp(+-Inf) resulted
+   in NaN.  The ugliness results from the bright minds at Intel.
+   For the i686 the code can be written better.
+   -- drepper@cygnus.com.  */
+	fxam				/* Is NaN or +-Inf?  */
+	fstsw	%ax
+	movb	$0x45, %dh
+	andb	%ah, %dh
+	cmpb	$0x05, %dh
+	je	1f			/* Is +-Inf, jump.  */
+	fldl2t
+	fmulp				/* x * log2(10) */
+	fld	%st
+	frndint				/* int(x * log2(10)) */
+	fsubr	%st,%st(1)		/* fract(x * log2(10)) */
+	fxch
+	f2xm1				/* 2^(fract(x * log2(10))) - 1 */
+	fld1
+	faddp				/* 2^(fract(x * log2(10))) */
+	fscale				/* e^x */
+	fstp	%st(1)
+	ret
+
+1:	testl	$0x200, %eax		/* Test sign.  */
+	jz	2f			/* If positive, jump.  */
+	fstp	%st
+	fldz				/* Set result to 0.  */
+2:	ret
+END (__ieee754_exp10)
diff --git a/sysdeps/libm-i387/e_exp10f.S b/sysdeps/libm-i387/e_exp10f.S
new file mode 100644
index 0000000000..4791b99afa
--- /dev/null
+++ b/sysdeps/libm-i387/e_exp10f.S
@@ -0,0 +1,38 @@
+/*
+ * Written by Ulrich Drepper.
+ */
+
+#include <machine/asm.h>
+
+/* e^x = 2^(x * log2(10)) */
+ENTRY(__ieee754_exp10f)
+	flds	4(%esp)
+/* I added the following ugly construct because exp(+-Inf) resulted
+   in NaN.  The ugliness results from the bright minds at Intel.
+   For the i686 the code can be written better.
+   -- drepper@cygnus.com.  */
+	fxam				/* Is NaN or +-Inf?  */
+	fstsw	%ax
+	movb	$0x45, %dh
+	andb	%ah, %dh
+	cmpb	$0x05, %dh
+	je	1f			/* Is +-Inf, jump.  */
+	fldl2t
+	fmulp				/* x * log2(10) */
+	fld	%st
+	frndint				/* int(x * log2(10)) */
+	fsubr	%st,%st(1)		/* fract(x * log2(10)) */
+	fxch
+	f2xm1				/* 2^(fract(x * log2(10))) - 1 */
+	fld1
+	faddp				/* 2^(fract(x * log2(10))) */
+	fscale				/* e^x */
+	fstp	%st(1)
+	ret
+
+1:	testl	$0x200, %eax		/* Test sign.  */
+	jz	2f			/* If positive, jump.  */
+	fstp	%st
+	fldz				/* Set result to 0.  */
+2:	ret
+END (__ieee754_exp10f)
diff --git a/sysdeps/libm-i387/e_exp10l.S b/sysdeps/libm-i387/e_exp10l.S
new file mode 100644
index 0000000000..71f0da792d
--- /dev/null
+++ b/sysdeps/libm-i387/e_exp10l.S
@@ -0,0 +1,38 @@
+/*
+ * Written by Ulrich Drepper <drepper@cygnus.com>.
+ */
+
+#include <machine/asm.h>
+
+/* e^x = 2^(x * log2l(10)) */
+ENTRY(__ieee754_exp10l)
+	fldt	4(%esp)
+/* I added the following ugly construct because expl(+-Inf) resulted
+   in NaN.  The ugliness results from the bright minds at Intel.
+   For the i686 the code can be written better.
+   -- drepper@cygnus.com.  */
+	fxam				/* Is NaN or +-Inf?  */
+	fstsw	%ax
+	movb	$0x45, %dh
+	andb	%ah, %dh
+	cmpb	$0x05, %dh
+	je	1f			/* Is +-Inf, jump.  */
+	fldl2t
+	fmulp				/* x * log2(10) */
+	fld	%st
+	frndint				/* int(x * log2(10)) */
+	fsubr	%st,%st(1)		/* fract(x * log2(10)) */
+	fxch
+	f2xm1				/* 2^(fract(x * log2(10))) - 1 */
+	fld1
+	faddp				/* 2^(fract(x * log2(10))) */
+	fscale				/* e^x */
+	fstp	%st(1)
+	ret
+
+1:	testl	$0x200, %eax		/* Test sign.  */
+	jz	2f			/* If positive, jump.  */
+	fstp	%st
+	fldz				/* Set result to 0.  */
+2:	ret
+END (__ieee754_exp10l)
diff --git a/sysdeps/libm-ieee754/e_exp10.c b/sysdeps/libm-ieee754/e_exp10.c
new file mode 100644
index 0000000000..3b367641cd
--- /dev/null
+++ b/sysdeps/libm-ieee754/e_exp10.c
@@ -0,0 +1,29 @@
+/* Copyright (C) 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <math.h>
+
+
+double
+__ieee754_exp10 (double arg)
+{
+  /* This is a very stupid and inprecise implementation.  It'll get
+     replaced sometime (soon?).  */
+  return __ieee754_exp (M_LN10 * arg);
+}
diff --git a/sysdeps/libm-ieee754/e_exp10f.c b/sysdeps/libm-ieee754/e_exp10f.c
new file mode 100644
index 0000000000..200eecd833
--- /dev/null
+++ b/sysdeps/libm-ieee754/e_exp10f.c
@@ -0,0 +1,29 @@
+/* Copyright (C) 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <math.h>
+
+
+float
+__ieee754_exp10f (float arg)
+{
+  /* This is a very stupid and inprecise implementation.  It'll get
+     replaced sometime (soon?).  */
+  return __ieee754_expf (M_LN10 * arg);
+}
diff --git a/sysdeps/libm-ieee754/e_exp10l.c b/sysdeps/libm-ieee754/e_exp10l.c
new file mode 100644
index 0000000000..e2820d24f7
--- /dev/null
+++ b/sysdeps/libm-ieee754/e_exp10l.c
@@ -0,0 +1,29 @@
+/* Copyright (C) 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <math.h>
+
+
+long double
+__ieee754_exp10l (long double arg)
+{
+  /* This is a very stupid and inprecise implementation.  It'll get
+     replaced sometime (soon?).  */
+  return __ieee754_expl (M_LN10l * arg);
+}
diff --git a/sysdeps/libm-ieee754/k_standard.c b/sysdeps/libm-ieee754/k_standard.c
index 6c410c4c1a..aeaa50f2ee 100644
--- a/sysdeps/libm-ieee754/k_standard.c
+++ b/sysdeps/libm-ieee754/k_standard.c
@@ -83,6 +83,8 @@ static double zero = 0.0;	/* used as const */
  *	43-- +0**neg
  *	44-- exp2 overflow
  *	45-- exp2 underflow
+ *	46-- exp10 overflow
+ *	47-- exp10 underflow
  */
 
 
@@ -874,7 +876,7 @@ static double zero = 0.0;	/* used as const */
 		/* exp(finite) overflow */
 		exc.type = OVERFLOW;
 		exc.name = type < 100 ? "exp2" : (type < 200
-						 ? "exp2f" : "exp2l");
+						  ? "exp2f" : "exp2l");
 		if (_LIB_VERSION == _SVID_)
 		  exc.retval = HUGE;
 		else
@@ -891,7 +893,7 @@ static double zero = 0.0;	/* used as const */
 		/* exp(finite) underflow */
 		exc.type = UNDERFLOW;
 		exc.name = type < 100 ? "exp2" : (type < 200
-						 ? "exp2f" : "exp2l");
+						  ? "exp2f" : "exp2l");
 		exc.retval = zero;
 		if (_LIB_VERSION == _POSIX_)
 		  __set_errno (ERANGE);
@@ -899,7 +901,39 @@ static double zero = 0.0;	/* used as const */
 			__set_errno (ERANGE);
 		}
 		break;
-		/* #### Last used is 44/144/244 ### */
+
+	    case 46:
+	    case 146:
+	    case 246:
+		/* exp(finite) overflow */
+		exc.type = OVERFLOW;
+		exc.name = type < 100 ? "exp10" : (type < 200
+						   ? "exp10f" : "exp10l");
+		if (_LIB_VERSION == _SVID_)
+		  exc.retval = HUGE;
+		else
+		  exc.retval = HUGE_VAL;
+		if (_LIB_VERSION == _POSIX_)
+		  __set_errno (ERANGE);
+		else if (!matherr(&exc)) {
+			__set_errno (ERANGE);
+		}
+		break;
+	    case 47:
+	    case 147:
+	    case 247:
+		/* exp(finite) underflow */
+		exc.type = UNDERFLOW;
+		exc.name = type < 100 ? "exp10" : (type < 200
+						   ? "exp10f" : "exp10l");
+		exc.retval = zero;
+		if (_LIB_VERSION == _POSIX_)
+		  __set_errno (ERANGE);
+		else if (!matherr(&exc)) {
+			__set_errno (ERANGE);
+		}
+		break;
+		/* #### Last used is 47/147/247 ### */
 	}
 	return exc.retval;
 }
diff --git a/sysdeps/libm-ieee754/w_exp10.c b/sysdeps/libm-ieee754/w_exp10.c
new file mode 100644
index 0000000000..cb27159e4f
--- /dev/null
+++ b/sysdeps/libm-ieee754/w_exp10.c
@@ -0,0 +1,59 @@
+/* @(#)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 exp10(x)
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+#ifdef __STDC__
+static const double
+#else
+static double
+#endif
+o_threshold=  3.0825471555991674389672e+02,
+u_threshold= -3.2360724533877978485251e+02;
+
+#ifdef __STDC__
+	double __exp10(double x)		/* wrapper exp10 */
+#else
+	double __exp10(x)			/* wrapper exp10 */
+	double x;
+#endif
+{
+#ifdef _IEEE_LIBM
+	return __ieee754_exp10(x);
+#else
+	double z;
+	z = __ieee754_exp10(x);
+	if(_LIB_VERSION == _IEEE_) return z;
+	if(__finite(x)) {
+	    if(x>o_threshold)
+	        return __kernel_standard(x,x,46); /* exp10 overflow */
+	    else if(x<u_threshold)
+	        return __kernel_standard(x,x,47); /* exp10 underflow */
+	}
+	return z;
+#endif
+}
+weak_alias (__exp10, exp10)
+strong_alias (__exp10, __pow10)
+weak_alias (__pow10, pow10)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__exp10, __exp10l)
+weak_alias (__exp10, exp10l)
+strong_alias (__exp10l, __pow10l)
+weak_alias (__pow10l, pow10l)
+#endif
diff --git a/sysdeps/libm-ieee754/w_exp10f.c b/sysdeps/libm-ieee754/w_exp10f.c
new file mode 100644
index 0000000000..f78be7973b
--- /dev/null
++