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.

16 files changed, 741 insertions, 18 deletions

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
+++ b/sysdeps/libm-ieee754/w_exp10f.c
@@ -0,0 +1,57 @@
+/* w_exp10f.c -- float version of 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 expf10(x)
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+#ifdef __STDC__
+static const float
+#else
+static float
+#endif
+o_threshold=  3.853183944498959298709e+01,
+u_threshold= -4.515449934959717928174e+01;
+
+#ifdef __STDC__
+	float __exp10f(float x)		/* wrapper exp10f */
+#else
+	float __exp10f(x)			/* wrapper exp10f */
+	float x;
+#endif
+{
+#ifdef _IEEE_LIBM
+	return __ieee754_exp10f(x);
+#else
+	float z;
+	z = __ieee754_exp10f(x);
+	if(_LIB_VERSION == _IEEE_) return z;
+	if(__finitef(x)) {
+	    if(x>o_threshold)
+	        /* exp overflow */
+	        return (float)__kernel_standard((double)x,(double)x,146);
+	    else if(x<u_threshold)
+	        /* exp underflow */
+	        return (float)__kernel_standard((double)x,(double)x,147);
+	}
+	return z;
+#endif
+}
+weak_alias (__exp10f, exp10f)
+strong_alias (__exp10f, __pow10f)
+weak_alias (__pow10f, pow10f)
diff --git a/sysdeps/libm-ieee754/w_exp10l.c b/sysdeps/libm-ieee754/w_exp10l.c
new file mode 100644
index 0000000000..7117873c22
--- /dev/null
+++ b/sysdeps/libm-ieee754/w_exp10l.c
@@ -0,0 +1,56 @@
+/* w_exp10l.c -- long double version of w_exp10.c.
+ * Conversion to long double by Ulrich Drepper,
+ * Cygnus Support, 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 exp10l(x)
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+#ifdef __STDC__
+static const long double
+#else
+static long double
+#endif
+o_threshold=  4.93207544895866790234755e+03,
+u_threshold= -4.95104033868549871764588e+03;
+
+#ifdef __STDC__
+	long double __exp10l(long double x)	/* wrapper exp10 */
+#else
+	long double __exp10l(x)			/* wrapper exp10 */
+	long double x;
+#endif
+{
+#ifdef _IEEE_LIBM
+	return __ieee754_exp10l(x);
+#else
+	long double z;
+	z = __ieee754_exp10l(x);
+	if(_LIB_VERSION == _IEEE_) return z;
+	if(__finitel(x)) {
+	    if(x>o_threshold)
+	        return __kernel_standard(x,x,246); /* exp10 overflow */
+	    else if(x<u_threshold)
+	        return __kernel_standard(x,x,247); /* exp10 underflow */
+	}
+	return z;
+#endif
+}
+weak_alias (__exp10l, exp10l)
+strong_alias (__exp10l, __pow10l)
+weak_alias (__pow10l, pow10l)
diff --git a/sysdeps/unix/sysv/linux/i386/Makefile b/sysdeps/unix/sysv/linux/i386/Makefile
index 7ef9e50085..73321ec76a 100644
--- a/sysdeps/unix/sysv/linux/i386/Makefile
+++ b/sysdeps/unix/sysv/linux/i386/Makefile
@@ -1,6 +1,6 @@
 ifeq ($(subdir),misc)
 sysdep_routines += ioperm iopl vm86 s_pread64 s_pwrite64
-sysdep_headers += sys/perm.h sys/vm86.h
+sysdep_headers += sys/elf.h sys/perm.h sys/reg.h sys/vm86.h
 endif
 
 ifeq ($(subdir),elf)
diff --git a/sysdeps/unix/sysv/linux/i386/sys/elf.h b/sysdeps/unix/sysv/linux/i386/sys/elf.h
new file mode 100644
index 0000000000..68ed3eeed0
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/i386/sys/elf.h
@@ -0,0 +1,60 @@
+/* Copyright (C) 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
+   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.  */
+
+#ifndef _SYS_ELF_H
+#define _SYS_ELF_H	1
+
+/*
+ * ELF register definitions..
+ */
+
+#include <sys/user.h>
+
+typedef unsigned long elf_greg_t;
+
+#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t))
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+
+typedef struct user_fpregs_struct elf_fpregset_t;
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE	4096
+
+/* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
+   now struct_user_regs, they are different) */
+
+#define ELF_CORE_COPY_REGS(pr_reg, regs)		\
+	pr_reg[0] = regs->ebx;				\
+	pr_reg[1] = regs->ecx;				\
+	pr_reg[2] = regs->edx;				\
+	pr_reg[3] = regs->esi;				\
+	pr_reg[4] = regs->edi;				\
+	pr_reg[5] = regs->ebp;				\
+	pr_reg[6] = regs->eax;				\
+	pr_reg[7] = regs->xds;				\
+	pr_reg[8] = regs->xes;				\
+	pr_reg[9] = regs->xds;				\
+	pr_reg[10] = regs->xds;				\
+	pr_reg[11] = regs->orig_eax;			\
+	pr_reg[12] = regs->eip;				\
+	pr_reg[13] = regs->xcs;				\
+	pr_reg[14] = regs->eflags;			\
+	pr_reg[15] = regs->esp;				\
+	pr_reg[16] = regs->xss;
+
+#endif	/* _SYS_ELF_H */
diff --git a/sysdeps/unix/sysv/linux/i386/sys/procfs.h b/sysdeps/unix/sysv/linux/i386/sys/procfs.h
new file mode 100644
index 0000000000..d98d9f55f8
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/i386/sys/procfs.h
@@ -0,0 +1,109 @@
+/* Copyright (C) 1996, 1997 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
+   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.
+