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-rw-r--r--sysdeps/ieee754/cabs.c232
-rw-r--r--sysdeps/ieee754/copysign.c37
-rw-r--r--sysdeps/ieee754/frexp.c42
-rw-r--r--sysdeps/ieee754/hypot.c197
-rw-r--r--sysdeps/ieee754/infnan.c50
-rw-r--r--sysdeps/ieee754/ldexp.c146
-rw-r--r--sysdeps/ieee754/log10.c30
7 files changed, 0 insertions, 734 deletions
diff --git a/sysdeps/ieee754/cabs.c b/sysdeps/ieee754/cabs.c
deleted file mode 100644
index eed81ece58..0000000000
--- a/sysdeps/ieee754/cabs.c
+++ /dev/null
@@ -1,232 +0,0 @@
-/*
- * Copyright (c) 1985 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#ifndef lint
-static char sccsid[] = "@(#)cabs.c 5.6 (Berkeley) 10/9/90";
-#endif /* not lint */
-
-/* HYPOT(X,Y)
- * RETURN THE SQUARE ROOT OF X^2 + Y^2 WHERE Z=X+iY
- * DOUBLE PRECISION (VAX D format 56 bits, IEEE DOUBLE 53 BITS)
- * CODED IN C BY K.C. NG, 11/28/84;
- * REVISED BY K.C. NG, 7/12/85.
- *
- * Required system supported functions :
- * copysign(x,y)
- * finite(x)
- * scalb(x,N)
- * sqrt(x)
- *
- * Method :
- * 1. replace x by |x| and y by |y|, and swap x and
- * y if y > x (hence x is never smaller than y).
- * 2. Hypot(x,y) is computed by:
- * Case I, x/y > 2
- *
- * y
- * hypot = x + -----------------------------
- * 2
- * sqrt ( 1 + [x/y] ) + x/y
- *
- * Case II, x/y <= 2
- * y
- * hypot = x + --------------------------------------------------
- * 2
- * [x/y] - 2
- * (sqrt(2)+1) + (x-y)/y + -----------------------------
- * 2
- * sqrt ( 1 + [x/y] ) + sqrt(2)
- *
- *
- *
- * Special cases:
- * hypot(x,y) is INF if x or y is +INF or -INF; else
- * hypot(x,y) is NAN if x or y is NAN.
- *
- * Accuracy:
- * hypot(x,y) returns the sqrt(x^2+y^2) with error less than 1 ulps (units
- * in the last place). See Kahan's "Interval Arithmetic Options in the
- * Proposed IEEE Floating Point Arithmetic Standard", Interval Mathematics
- * 1980, Edited by Karl L.E. Nickel, pp 99-128. (A faster but less accurate
- * code follows in comments.) In a test run with 500,000 random arguments
- * on a VAX, the maximum observed error was .959 ulps.
- *
- * Constants:
- * The hexadecimal values are the intended ones for the following constants.
- * The decimal values may be used, provided that the compiler will convert
- * from decimal to binary accurately enough to produce the hexadecimal values
- * shown.
- */
-#include "mathimpl.h"
-
-#if 0 /* Moved to separate file. */
-
-vc(r2p1hi, 2.4142135623730950345E0 ,8279,411a,ef32,99fc, 2, .9A827999FCEF32)
-vc(r2p1lo, 1.4349369327986523769E-17 ,597d,2484,754b,89b3, -55, .84597D89B3754B)
-vc(sqrt2, 1.4142135623730950622E0 ,04f3,40b5,de65,33f9, 1, .B504F333F9DE65)
-
-ic(r2p1hi, 2.4142135623730949234E0 , 1, 1.3504F333F9DE6)
-ic(r2p1lo, 1.2537167179050217666E-16 , -53, 1.21165F626CDD5)
-ic(sqrt2, 1.4142135623730951455E0 , 0, 1.6A09E667F3BCD)
-
-#ifdef vccast
-#define r2p1hi vccast(r2p1hi)
-#define r2p1lo vccast(r2p1lo)
-#define sqrt2 vccast(sqrt2)
-#endif
-
-double
-hypot(x,y)
-double x, y;
-{
- static const double zero=0, one=1,
- small=1.0E-18; /* fl(1+small)==1 */
- static const ibig=30; /* fl(1+2**(2*ibig))==1 */
- double t,r;
- int exp;
-
- if(finite(x))
- if(finite(y))
- {
- x=copysign(x,one);
- y=copysign(y,one);
- if(y > x)
- { t=x; x=y; y=t; }
- if(x == zero) return(zero);
- if(y == zero) return(x);
- exp= logb(x);
- if(exp-(int)logb(y) > ibig )
- /* raise inexact flag and return |x| */
- { one+small; return(x); }
-
- /* start computing sqrt(x^2 + y^2) */
- r=x-y;
- if(r>y) { /* x/y > 2 */
- r=x/y;
- r=r+sqrt(one+r*r); }
- else { /* 1 <= x/y <= 2 */
- r/=y; t=r*(r+2.0);
- r+=t/(sqrt2+sqrt(2.0+t));
- r+=r2p1lo; r+=r2p1hi; }
-
- r=y/r;
- return(x+r);
-
- }
-
- else if(y==y) /* y is +-INF */
- return(copysign(y,one));
- else
- return(y); /* y is NaN and x is finite */
-
- else if(x==x) /* x is +-INF */
- return (copysign(x,one));
- else if(finite(y))
- return(x); /* x is NaN, y is finite */
-#if !defined(vax)&&!defined(tahoe)
- else if(y!=y) return(y); /* x and y is NaN */
-#endif /* !defined(vax)&&!defined(tahoe) */
- else return(copysign(y,one)); /* y is INF */
-}
-
-#endif /* 0 */
-
-/* CABS(Z)
- * RETURN THE ABSOLUTE VALUE OF THE COMPLEX NUMBER Z = X + iY
- * DOUBLE PRECISION (VAX D format 56 bits, IEEE DOUBLE 53 BITS)
- * CODED IN C BY K.C. NG, 11/28/84.
- * REVISED BY K.C. NG, 7/12/85.
- *
- * Required kernel function :
- * hypot(x,y)
- *
- * Method :
- * cabs(z) = hypot(x,y) .
- */
-
-double
-cabs(z)
-struct __cabs_complex z;
-{
- return hypot(z.__x,z.__y);
-}
-
-double
-z_abs(z)
-struct __cabs_complex *z;
-{
- return hypot(z->__x,z->__y);
-}
-
-/* A faster but less accurate version of cabs(x,y) */
-#if 0
-double hypot(x,y)
-double x, y;
-{
- static const double zero=0, one=1;
- small=1.0E-18; /* fl(1+small)==1 */
- static const ibig=30; /* fl(1+2**(2*ibig))==1 */
- double temp;
- int exp;
-
- if(finite(x))
- if(finite(y))
- {
- x=copysign(x,one);
- y=copysign(y,one);
- if(y > x)
- { temp=x; x=y; y=temp; }
- if(x == zero) return(zero);
- if(y == zero) return(x);
- exp= logb(x);
- x=scalb(x,-exp);
- if(exp-(int)logb(y) > ibig )
- /* raise inexact flag and return |x| */
- { one+small; return(scalb(x,exp)); }
- else y=scalb(y,-exp);
- return(scalb(sqrt(x*x+y*y),exp));
- }
-
- else if(y==y) /* y is +-INF */
- return(copysign(y,one));
- else
- return(y); /* y is NaN and x is finite */
-
- else if(x==x) /* x is +-INF */
- return (copysign(x,one));
- else if(finite(y))
- return(x); /* x is NaN, y is finite */
- else if(y!=y) return(y); /* x and y is NaN */
- else return(copysign(y,one)); /* y is INF */
-}
-#endif
diff --git a/sysdeps/ieee754/copysign.c b/sysdeps/ieee754/copysign.c
deleted file mode 100644
index f1f0591d5f..0000000000
--- a/sysdeps/ieee754/copysign.c
+++ /dev/null
@@ -1,37 +0,0 @@
-/* Copyright (C) 1991, 1992, 1995 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., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
-
-#include <ansidecl.h>
-#include <math.h>
-#include "ieee754.h"
-
-/* Return X with its signed changed to Y's. */
-double
-DEFUN(__copysign, (x, y), double x AND double y)
-{
- union ieee754_double ux, uy;
-
- ux.d = x;
- uy.d = y;
-
- ux.ieee.negative = uy.ieee.negative;
-
- return ux.d;
-}
-
-weak_alias (__copysign, copysign)
diff --git a/sysdeps/ieee754/frexp.c b/sysdeps/ieee754/frexp.c
deleted file mode 100644
index c56a17f6c1..0000000000
--- a/sysdeps/ieee754/frexp.c
+++ /dev/null
@@ -1,42 +0,0 @@
-/* Copyright (C) 1993 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., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
-
-#include <math.h>
-#include "ieee754.h"
-
-/* Break VALUE into a normalized fraction and an integral power of 2. */
-
-double
-frexp (value, exp)
- double value;
- int *exp;
-{
- if (value == 0)
- {
- *exp = 0;
- return 0;
- }
- else
- {
- union ieee754_double u;
- u.d = value;
- *exp = u.ieee.exponent - 1022;
- u.ieee.exponent = 1022;
- return u.d;
- }
-}
diff --git a/sysdeps/ieee754/hypot.c b/sysdeps/ieee754/hypot.c
deleted file mode 100644
index cdc2ed02b9..0000000000
--- a/sysdeps/ieee754/hypot.c
+++ /dev/null
@@ -1,197 +0,0 @@
-/*
- * Copyright (c) 1985 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-/* HYPOT(X,Y)
- * RETURN THE SQUARE ROOT OF X^2 + Y^2 WHERE Z=X+iY
- * DOUBLE PRECISION (VAX D format 56 bits, IEEE DOUBLE 53 BITS)
- * CODED IN C BY K.C. NG, 11/28/84;
- * REVISED BY K.C. NG, 7/12/85.
- *
- * Required system supported functions :
- * copysign(x,y)
- * finite(x)
- * scalb(x,N)
- * sqrt(x)
- *
- * Method :
- * 1. replace x by |x| and y by |y|, and swap x and
- * y if y > x (hence x is never smaller than y).
- * 2. Hypot(x,y) is computed by:
- * Case I, x/y > 2
- *
- * y
- * hypot = x + -----------------------------
- * 2
- * sqrt ( 1 + [x/y] ) + x/y
- *
- * Case II, x/y <= 2
- * y
- * hypot = x + --------------------------------------------------
- * 2
- * [x/y] - 2
- * (sqrt(2)+1) + (x-y)/y + -----------------------------
- * 2
- * sqrt ( 1 + [x/y] ) + sqrt(2)
- *
- *
- *
- * Special cases:
- * hypot(x,y) is INF if x or y is +INF or -INF; else
- * hypot(x,y) is NAN if x or y is NAN.
- *
- * Accuracy:
- * hypot(x,y) returns the sqrt(x^2+y^2) with error less than 1 ulps (units
- * in the last place). See Kahan's "Interval Arithmetic Options in the
- * Proposed IEEE Floating Point Arithmetic Standard", Interval Mathematics
- * 1980, Edited by Karl L.E. Nickel, pp 99-128. (A faster but less accurate
- * code follows in comments.) In a test run with 500,000 random arguments
- * on a VAX, the maximum observed error was .959 ulps.
- *
- * Constants:
- * The hexadecimal values are the intended ones for the following constants.
- * The decimal values may be used, provided that the compiler will convert
- * from decimal to binary accurately enough to produce the hexadecimal values
- * shown.
- */
-#include "mathimpl.h"
-
-vc(r2p1hi, 2.4142135623730950345E0 ,8279,411a,ef32,99fc, 2, .9A827999FCEF32)
-vc(r2p1lo, 1.4349369327986523769E-17 ,597d,2484,754b,89b3, -55, .84597D89B3754B)
-vc(sqrt2, 1.4142135623730950622E0 ,04f3,40b5,de65,33f9, 1, .B504F333F9DE65)
-
-ic(r2p1hi, 2.4142135623730949234E0 , 1, 1.3504F333F9DE6)
-ic(r2p1lo, 1.2537167179050217666E-16 , -53, 1.21165F626CDD5)
-ic(sqrt2, 1.4142135623730951455E0 , 0, 1.6A09E667F3BCD)
-
-#ifdef vccast
-#define r2p1hi vccast(r2p1hi)
-#define r2p1lo vccast(r2p1lo)
-#define sqrt2 vccast(sqrt2)
-#endif
-
-double
-hypot(x,y)
-double x, y;
-{
- static const double zero=0, one=1,
- small=1.0E-18; /* fl(1+small)==1 */
- static const ibig=30; /* fl(1+2**(2*ibig))==1 */
- double t,r;
- int exp;
-
- if(finite(x))
- if(finite(y))
- {
- x=copysign(x,one);
- y=copysign(y,one);
- if(y > x)
- { t=x; x=y; y=t; }
- if(x == zero) return(zero);
- if(y == zero) return(x);
- exp= logb(x);
- if(exp-(int)logb(y) > ibig )
- /* raise inexact flag and return |x| */
- { one+small; return(x); }
-
- /* start computing sqrt(x^2 + y^2) */
- r=x-y;
- if(r>y) { /* x/y > 2 */
- r=x/y;
- r=r+sqrt(one+r*r); }
- else { /* 1 <= x/y <= 2 */
- r/=y; t=r*(r+2.0);
- r+=t/(sqrt2+sqrt(2.0+t));
- r+=r2p1lo; r+=r2p1hi; }
-
- r=y/r;
- return(x+r);
-
- }
-
- else if(y==y) /* y is +-INF */
- return(copysign(y,one));
- else
- return(y); /* y is NaN and x is finite */
-
- else if(x==x) /* x is +-INF */
- return (copysign(x,one));
- else if(finite(y))
- return(x); /* x is NaN, y is finite */
-#if !defined(vax)&&!defined(tahoe)
- else if(y!=y) return(y); /* x and y is NaN */
-#endif /* !defined(vax)&&!defined(tahoe) */
- else return(copysign(y,one)); /* y is INF */
-}
-
-/* A faster but less accurate version of cabs(x,y) */
-#if 0
-double hypot(x,y)
-double x, y;
-{
- static const double zero=0, one=1;
- small=1.0E-18; /* fl(1+small)==1 */
- static const ibig=30; /* fl(1+2**(2*ibig))==1 */
- double temp;
- int exp;
-
- if(finite(x))
- if(finite(y))
- {
- x=copysign(x,one);
- y=copysign(y,one);
- if(y > x)
- { temp=x; x=y; y=temp; }
- if(x == zero) return(zero);
- if(y == zero) return(x);
- exp= logb(x);
- x=scalb(x,-exp);
- if(exp-(int)logb(y) > ibig )
- /* raise inexact flag and return |x| */
- { one+small; return(scalb(x,exp)); }
- else y=scalb(y,-exp);
- return(scalb(sqrt(x*x+y*y),exp));
- }
-
- else if(y==y) /* y is +-INF */
- return(copysign(y,one));
- else
- return(y); /* y is NaN and x is finite */
-
- else if(x==x) /* x is +-INF */
- return (copysign(x,one));
- else if(finite(y))
- return(x); /* x is NaN, y is finite */
- else if(y!=y) return(y); /* x and y is NaN */
- else return(copysign(y,one)); /* y is INF */
-}
-#endif
diff --git a/sysdeps/ieee754/infnan.c b/sysdeps/ieee754/infnan.c
deleted file mode 100644
index 89ab5b6e08..0000000000
--- a/sysdeps/ieee754/infnan.c
+++ /dev/null
@@ -1,50 +0,0 @@
-/* Copyright (C) 1991, 1992, 1995 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., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
-
-#include <ansidecl.h>
-#include <errno.h>
-#include <math.h>
-#include <float.h>
-#include "ieee754.h"
-
-/* Deal with an infinite or NaN result.
- If ERROR is ERANGE, result is +Inf;
- if ERROR is - ERANGE, result is -Inf;
- otherwise result is NaN.
- This will set `errno' to either ERANGE or EDOM,
- and may return an infinity or NaN, or may do something else. */
-double
-DEFUN(__infnan, (error), int error)
-{
- switch (error)
- {
- case ERANGE:
- errno = ERANGE;
- return HUGE_VAL;
-
- case - ERANGE:
- errno = ERANGE;
- return - HUGE_VAL;
-
- default:
- errno = EDOM;
- return NAN;
- }
-}
-
-weak_alias (__infnan, infnan)
diff --git a/sysdeps/ieee754/ldexp.c b/sysdeps/ieee754/ldexp.c
deleted file mode 100644
index e8e3c676f9..0000000000
--- a/sysdeps/ieee754/ldexp.c
+++ /dev/null
@@ -1,146 +0,0 @@
-/* Copyright (C) 1992, 1995 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., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
-
-/*
- * Copyright (c) 1985 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted provided
- * that: (1) source distributions retain this entire copyright notice and
- * comment, and (2) distributions including binaries display the following
- * acknowledgement: ``This product includes software developed by the
- * University of California, Berkeley and its contributors'' in the
- * documentation or other materials provided with the distribution and in
- * all advertising materials mentioning features or use of this software.
- * Neither the name of the University nor the names of its contributors may
- * be used to endorse or promote products derived from this software without
- * specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
-#include <ansidecl.h>
-#include <math.h>
-#include <float.h>
-#include <errno.h>
-#include "ieee754.h"
-
-double
-DEFUN(ldexp, (x, exp),
- double x AND int exp)
-{
- union ieee754_double u;
- unsigned int exponent;
-
- u.d = x;
-#define x u.d
-
- exponent = u.ieee.exponent;
-
- /* The order of the tests is carefully chosen to handle
- the usual case first, with no branches taken. */
-
- if (exponent != 0)
- {
- /* X is nonzero and not denormalized. */
-
- if (exponent <= DBL_MAX_EXP - DBL_MIN_EXP + 1)
- {
- /* X is finite. When EXP < 0, overflow is actually underflow. */
-
- exponent += exp;
-
- if (exponent != 0)
- {
- if (exponent <= DBL_MAX_EXP - DBL_MIN_EXP + 1)
- {
- /* In range. */
- u.ieee.exponent = exponent;
- return x;
- }
-
- if (exp >= 0)
- overflow:
- {
- CONST int negative = u.ieee.negative;
- u.d = HUGE_VAL;
- u.ieee.negative = negative;
- errno = ERANGE;
- return u.d;
- }
-
- if (exponent <= - (unsigned int) (DBL_MANT_DIG + 1))
- {
- /* Underflow. */
- CONST int negative = u.ieee.negative;
- u.d = 0.0;
- u.ieee.negative = negative;
- errno = ERANGE;
- return u.d;
- }
- }
-
- /* Gradual underflow. */
- u.ieee.exponent = 1;
- u.d *= ldexp (1.0, (int) exponent - 1);
- if (u.ieee.mantissa0 == 0 && u.ieee.mantissa1 == 0)
- /* Underflow. */
- errno = ERANGE;
- return u.d;
- }
-
- /* X is +-infinity or NaN. */
- if (u.ieee.mantissa0 == 0 && u.ieee.mantissa1 == 0)
- {
- /* X is +-infinity. */
- if (exp >= 0)
- goto overflow;
- else
- {
- /* (infinity * number < 1). With infinite precision,
- (infinity / finite) would be infinity, but otherwise it's
- safest to regard (infinity / 2) as indeterminate. The
- infinity might be (2 * finite). */
- CONST int negative = u.ieee.negative;
- u.d = NAN;
- u.ieee.negative = negative;
- errno = EDOM;
- return u.d;
- }
- }
-
- /* X is NaN. */
- errno = EDOM;
- return u.d;
- }
-
- /* X is zero or denormalized. */
- if (u.ieee.mantissa0 == 0 && u.ieee.mantissa1 == 0)
- /* X is +-0.0. */
- return x;
-
- /* X is denormalized.
- Multiplying by 2 ** DBL_MANT_DIG normalizes it;
- we then subtract the DBL_MANT_DIG we added to the exponent. */
- return ldexp (x * ldexp (1.0, DBL_MANT_DIG), exp - DBL_MANT_DIG);
-}
-
-/* Compatibility names for the same function. */
-weak_alias (ldexp, __scalb)
-weak_alias (ldexp, scalb)
diff --git a/sysdeps/ieee754/log10.c b/sysdeps/ieee754/log10.c
deleted file mode 100644
index da2f5b4d2b..0000000000
--- a/sysdeps/ieee754/log10.c
+++ /dev/null
@@ -1,30 +0,0 @@
-/* Copyright (C) 1991, 1995 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., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
-
-#include <ansidecl.h>
-#include <errno.h>
-#include <math.h>
-
-/* Return the base-ten logarithm of X. */
-double
-DEFUN(log10, (x), double x)
-{
- CONST double inverse_ln10 = 4.3429448190325181667e-1; /* 1 / log(10) */
-
- return inverse_ln10 * log(x);
-}
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