diff options
| -rw-r--r-- | sysdeps/generic/s_exp2l.c | 14 | ||||
| -rw-r--r-- | sysdeps/i386/fpu/s_exp2.S | 37 | ||||
| -rw-r--r-- | sysdeps/i386/fpu/s_exp2f.S | 37 | ||||
| -rw-r--r-- | sysdeps/i386/fpu/s_exp2l.S | 37 | ||||
| -rw-r--r-- | sysdeps/ieee754/dbl-64/s_exp2.c | 130 | ||||
| -rw-r--r-- | sysdeps/ieee754/flt-32/s_exp2f.c | 128 | ||||
| -rw-r--r-- | sysdeps/m68k/fpu/s_exp2.c | 2 | ||||
| -rw-r--r-- | sysdeps/m68k/fpu/s_exp2f.c | 2 | ||||
| -rw-r--r-- | sysdeps/m68k/fpu/s_exp2l.c | 2 |
9 files changed, 0 insertions, 389 deletions
diff --git a/sysdeps/generic/s_exp2l.c b/sysdeps/generic/s_exp2l.c deleted file mode 100644 index 64ef6d3d50..0000000000 --- a/sysdeps/generic/s_exp2l.c +++ /dev/null @@ -1,14 +0,0 @@ -#include <math.h> -#include <stdio.h> -#include <errno.h> - -long double -__ieee754_exp2l (long double x) -{ - fputs ("__ieee754_exp2l not implemented\n", stderr); - __set_errno (ENOSYS); - return 0.0; -} - -stub_warning (exp2l) -#include <stub-tag.h> diff --git a/sysdeps/i386/fpu/s_exp2.S b/sysdeps/i386/fpu/s_exp2.S deleted file mode 100644 index 778c0c0eb6..0000000000 --- a/sysdeps/i386/fpu/s_exp2.S +++ /dev/null @@ -1,37 +0,0 @@ -/* - * Written by J.T. Conklin <jtc@netbsd.org>. - * Adapted for exp2 by Ulrich Drepper <drepper@cygnus.com>. - * Public domain. - */ - -#include <machine/asm.h> - -ENTRY(__ieee754_exp2) - 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. */ - fld %st - frndint /* int(x) */ - fsubr %st,%st(1) /* fract(x) */ - fxch - f2xm1 /* 2^(fract(x)) - 1 */ - fld1 - faddp /* 2^(fract(x)) */ - 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_exp2) diff --git a/sysdeps/i386/fpu/s_exp2f.S b/sysdeps/i386/fpu/s_exp2f.S deleted file mode 100644 index c2d1af1af1..0000000000 --- a/sysdeps/i386/fpu/s_exp2f.S +++ /dev/null @@ -1,37 +0,0 @@ -/* - * Written by J.T. Conklin <jtc@netbsd.org>. - * Adapted for exp2 by Ulrich Drepper <drepper@cygnus.com>. - * Public domain. - */ - -#include <machine/asm.h> - -ENTRY(__ieee754_exp2f) - 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. */ - fld %st - frndint /* int(x) */ - fsubr %st,%st(1) /* fract(x) */ - fxch - f2xm1 /* 2^(fract(x)) - 1 */ - fld1 - faddp /* 2^(fract(x)) */ - 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_exp2f) diff --git a/sysdeps/i386/fpu/s_exp2l.S b/sysdeps/i386/fpu/s_exp2l.S deleted file mode 100644 index fa1fdc9236..0000000000 --- a/sysdeps/i386/fpu/s_exp2l.S +++ /dev/null @@ -1,37 +0,0 @@ -/* - * Written by J.T. Conklin <jtc@netbsd.org>. - * Adapted for exp2 by Ulrich Drepper <drepper@cygnus.com>. - * Public domain. - */ - -#include <machine/asm.h> - -ENTRY(__ieee754_exp2l) - fldt 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. */ - fld %st - frndint /* int(x) */ - fsubr %st,%st(1) /* fract(x) */ - fxch - f2xm1 /* 2^(fract(x)) - 1 */ - fld1 - faddp /* 2^(fract(x)) */ - 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_exp2l) diff --git a/sysdeps/ieee754/dbl-64/s_exp2.c b/sysdeps/ieee754/dbl-64/s_exp2.c deleted file mode 100644 index d02af15ecc..0000000000 --- a/sysdeps/ieee754/dbl-64/s_exp2.c +++ /dev/null @@ -1,130 +0,0 @@ -/* Double-precision floating point 2^x. - Copyright (C) 1997, 1998, 2000 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Geoffrey Keating <geoffk@ozemail.com.au> - - 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. */ - -/* The basic design here is from - Shmuel Gal and Boris Bachelis, "An Accurate Elementary Mathematical - Library for the IEEE Floating Point Standard", ACM Trans. Math. Soft., - 17 (1), March 1991, pp. 26-45. - It has been slightly modified to compute 2^x instead of e^x. - */ -#ifndef _GNU_SOURCE -#define _GNU_SOURCE -#endif -#include <stdlib.h> -#include <float.h> -#include <ieee754.h> -#include <math.h> -#include <fenv.h> -#include <inttypes.h> -#include <math_private.h> - -#include "t_exp2.h" - -static const volatile double TWO1023 = 8.988465674311579539e+307; -static const volatile double TWOM1000 = 9.3326361850321887899e-302; - -double -__ieee754_exp2 (double x) -{ - static const double himark = (double) DBL_MAX_EXP; - static const double lomark = (double) (DBL_MIN_EXP - DBL_MANT_DIG - 1) - 1.0; - - /* Check for usual case. */ - if (isless (x, himark) && isgreater (x, lomark)) - { - static const double THREEp42 = 13194139533312.0; - int tval, unsafe; - double rx, x22, result; - union ieee754_double ex2_u, scale_u; - fenv_t oldenv; - - feholdexcept (&oldenv); -#ifdef FE_TONEAREST - /* If we don't have this, it's too bad. */ - fesetround (FE_TONEAREST); -#endif - - /* 1. Argument reduction. - Choose integers ex, -256 <= t < 256, and some real - -1/1024 <= x1 <= 1024 so that - x = ex + t/512 + x1. - - First, calculate rx = ex + t/512. */ - rx = x + THREEp42; - rx -= THREEp42; - x -= rx; /* Compute x=x1. */ - /* Compute tval = (ex*512 + t)+256. - Now, t = (tval mod 512)-256 and ex=tval/512 [that's mod, NOT %; and - /-round-to-nearest not the usual c integer /]. */ - tval = (int) (rx * 512.0 + 256.0); - - /* 2. Adjust for accurate table entry. - Find e so that - x = ex + t/512 + e + x2 - where -1e6 < e < 1e6, and - (double)(2^(t/512+e)) - is accurate to one part in 2^-64. */ - - /* 'tval & 511' is the same as 'tval%512' except that it's always - positive. - Compute x = x2. */ - x -= exp2_deltatable[tval & 511]; - - /* 3. Compute ex2 = 2^(t/512+e+ex). */ - ex2_u.d = exp2_accuratetable[tval & 511]; - tval >>= 9; - unsafe = abs(tval) >= -DBL_MIN_EXP - 1; - ex2_u.ieee.exponent += tval >> unsafe; - scale_u.d = 1.0; - scale_u.ieee.exponent += tval - (tval >> unsafe); - - /* 4. Approximate 2^x2 - 1, using a fourth-degree polynomial, - with maximum error in [-2^-10-2^-30,2^-10+2^-30] - less than 10^-19. */ - - x22 = (((.0096181293647031180 - * x + .055504110254308625) - * x + .240226506959100583) - * x + .69314718055994495) * ex2_u.d; - - /* 5. Return (2^x2-1) * 2^(t/512+e+ex) + 2^(t/512+e+ex). */ - fesetenv (&oldenv); - - result = x22 * x + ex2_u.d; - - if (!unsafe) - return result; - else - return result * scale_u.d; - } - /* Exceptional cases: */ - else if (isless (x, himark)) - { - if (__isinf (x)) - /* e^-inf == 0, with no error. */ - return 0; - else - /* Underflow */ - return TWOM1000 * TWOM1000; - } - else - /* Return x, if x is a NaN or Inf; or overflow, otherwise. */ - return TWO1023*x; -} diff --git a/sysdeps/ieee754/flt-32/s_exp2f.c b/sysdeps/ieee754/flt-32/s_exp2f.c deleted file mode 100644 index 4d529ea285..0000000000 --- a/sysdeps/ieee754/flt-32/s_exp2f.c +++ /dev/null @@ -1,128 +0,0 @@ -/* Single-precision floating point 2^x. - Copyright (C) 1997, 1998, 2000 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Geoffrey Keating <geoffk@ozemail.com.au> - - 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. */ - -/* The basic design here is from - Shmuel Gal and Boris Bachelis, "An Accurate Elementary Mathematical - Library for the IEEE Floating Point Standard", ACM Trans. Math. Soft., - 17 (1), March 1991, pp. 26-45. - It has been slightly modified to compute 2^x instead of e^x, and for - single-precision. - */ -#ifndef _GNU_SOURCE -# define _GNU_SOURCE -#endif -#include <stdlib.h> -#include <float.h> -#include <ieee754.h> -#include <math.h> -#include <fenv.h> -#include <inttypes.h> -#include <math_private.h> - -#include "t_exp2f.h" - -static const volatile float TWOM100 = 7.88860905e-31; -static const volatile float TWO127 = 1.7014118346e+38; - -float -__ieee754_exp2f (float x) -{ - static const float himark = (float) FLT_MAX_EXP; - static const float lomark = (float) (FLT_MIN_EXP - FLT_MANT_DIG - 1) - 1.0; - - /* Check for usual case. */ - if (isless (x, himark) && isgreater (x, lomark)) - { - static const float THREEp14 = 49152.0; - int tval, unsafe; - float rx, x22, result; - union ieee754_float ex2_u, scale_u; - fenv_t oldenv; - - feholdexcept (&oldenv); -#ifdef FE_TONEAREST - /* If we don't have this, it's too bad. */ - fesetround (FE_TONEAREST); -#endif - - /* 1. Argument reduction. - Choose integers ex, -128 <= t < 128, and some real - -1/512 <= x1 <= 1/512 so that - x = ex + t/512 + x1. - - First, calculate rx = ex + t/256. */ - rx = x + THREEp14; - rx -= THREEp14; - x -= rx; /* Compute x=x1. */ - /* Compute tval = (ex*256 + t)+128. - Now, t = (tval mod 256)-128 and ex=tval/256 [that's mod, NOT %; and - /-round-to-nearest not the usual c integer /]. */ - tval = (int) (rx * 256.0f + 128.0f); - - /* 2. Adjust for accurate table entry. - Find e so that - x = ex + t/256 + e + x2 - where -7e-4 < e < 7e-4, and - (float)(2^(t/256+e)) - is accurate to one part in 2^-64. */ - - /* 'tval & 255' is the same as 'tval%256' except that it's always - positive. - Compute x = x2. */ - x -= __exp2f_deltatable[tval & 255]; - - /* 3. Compute ex2 = 2^(t/255+e+ex). */ - ex2_u.f = __exp2f_atable[tval & 255]; - tval >>= 8; - unsafe = abs(tval) >= -FLT_MIN_EXP - 1; - ex2_u.ieee.exponent += tval >> unsafe; - scale_u.f = 1.0; - scale_u.ieee.exponent += tval - (tval >> unsafe); - - /* 4. Approximate 2^x2 - 1, using a second-degree polynomial, - with maximum error in [-2^-9 - 2^-14, 2^-9 + 2^-14] - less than 1.3e-10. */ - - x22 = (.24022656679f * x + .69314736128f) * ex2_u.f; - - /* 5. Return (2^x2-1) * 2^(t/512+e+ex) + 2^(t/512+e+ex). */ - fesetenv (&oldenv); - - result = x22 * x + ex2_u.f; - - if (!unsafe) - return result; - else - return result * scale_u.f; - } - /* Exceptional cases: */ - else if (isless (x, himark)) - { - if (__isinff (x)) - /* e^-inf == 0, with no error. */ - return 0; - else - /* Underflow */ - return TWOM100 * TWOM100; - } - else - /* Return x, if x is a NaN or Inf; or overflow, otherwise. */ - return TWO127*x; -} diff --git a/sysdeps/m68k/fpu/s_exp2.c b/sysdeps/m68k/fpu/s_exp2.c deleted file mode 100644 index 24fac4fce6..0000000000 --- a/sysdeps/m68k/fpu/s_exp2.c +++ /dev/null @@ -1,2 +0,0 @@ -#define FUNC __ieee754_exp2 -#include <e_acos.c> diff --git a/sysdeps/m68k/fpu/s_exp2f.c b/sysdeps/m68k/fpu/s_exp2f.c deleted file mode 100644 index 593842e4e5..0000000000 --- a/sysdeps/m68k/fpu/s_exp2f.c +++ /dev/null @@ -1,2 +0,0 @@ -#define FUNC __ieee754_exp2f -#include <e_acosf.c> diff --git a/sysdeps/m68k/fpu/s_exp2l.c b/sysdeps/m68k/fpu/s_exp2l.c deleted file mode 100644 index 0ab2a428c0..0000000000 --- a/sysdeps/m68k/fpu/s_exp2l.c +++ /dev/null @@ -1,2 +0,0 @@ -#define FUNC __ieee754_exp2l -#include <e_acosl.c> |