From 7a99a614618a92b01715733d34b3320d75d9e997 Mon Sep 17 00:00:00 2001 From: Andreas Jaeger Date: Wed, 18 Apr 2012 09:46:20 +0200 Subject: Finish ilogb changes [BZ# 6794] * sysdeps/ieee754/ldbl-96/s_ilogbl.c: Moved to ... * sysdeps/ieee754/ldbl-96/e_ilogbl.c: ... here. Rename __ilogbl to __ieee754_ilogbl and remove weak_alias. * sysdeps/ieee754/ldbl-128/s_ilogbl.c: Moved to ... * sysdeps/ieee754/ldbl-128/e_ilogbl.c: ... here. Rename __ilogbl to __ieee754_ilogbl and remove weak_alias. * sysdeps/ieee754/ldbl-64-128/s_ilogbl.c: Moved to ... * sysdeps/ieee754/ldbl-64-128/e_ilogbl.c: ... here. * sysdeps/sparc/sparc64/soft-fp/s_ilogbl.c: Moved to ... * sysdeps/sparc/sparc64/soft-fp/e_ilogbl.c: ... here. Rename __ilogbl to __ieee754_ilogbl and remove weak_alias. --- sysdeps/ieee754/ldbl-128/e_ilogbl.c | 56 ++++++++++++++++++++++ sysdeps/ieee754/ldbl-128/s_ilogbl.c | 57 ---------------------- sysdeps/ieee754/ldbl-64-128/e_ilogbl.c | 2 + sysdeps/ieee754/ldbl-64-128/s_ilogbl.c | 5 -- sysdeps/ieee754/ldbl-96/e_ilogbl.c | 59 +++++++++++++++++++++++ sysdeps/ieee754/ldbl-96/s_ilogbl.c | 60 ----------------------- sysdeps/sparc/sparc64/soft-fp/e_ilogbl.c | 79 +++++++++++++++++++++++++++++++ sysdeps/sparc/sparc64/soft-fp/s_ilogbl.c | 81 -------------------------------- 8 files changed, 196 insertions(+), 203 deletions(-) create mode 100644 sysdeps/ieee754/ldbl-128/e_ilogbl.c delete mode 100644 sysdeps/ieee754/ldbl-128/s_ilogbl.c create mode 100644 sysdeps/ieee754/ldbl-64-128/e_ilogbl.c delete mode 100644 sysdeps/ieee754/ldbl-64-128/s_ilogbl.c create mode 100644 sysdeps/ieee754/ldbl-96/e_ilogbl.c delete mode 100644 sysdeps/ieee754/ldbl-96/s_ilogbl.c create mode 100644 sysdeps/sparc/sparc64/soft-fp/e_ilogbl.c delete mode 100644 sysdeps/sparc/sparc64/soft-fp/s_ilogbl.c (limited to 'sysdeps') diff --git a/sysdeps/ieee754/ldbl-128/e_ilogbl.c b/sysdeps/ieee754/ldbl-128/e_ilogbl.c new file mode 100644 index 0000000000..0a476492d6 --- /dev/null +++ b/sysdeps/ieee754/ldbl-128/e_ilogbl.c @@ -0,0 +1,56 @@ +/* s_ilogbl.c -- long double version of s_ilogb.c. + * Conversion to IEEE quad long double by Jakub Jelinek, jj@ultra.linux.cz. + */ + +/* + * ==================================================== + * 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. + * ==================================================== + */ + +#if defined(LIBM_SCCS) && !defined(lint) +static char rcsid[] = "$NetBSD: $"; +#endif + +/* ilogbl(long double x) + * return the binary exponent of non-zero x + * ilogbl(0) = FP_ILOGB0 + * ilogbl(NaN) = FP_ILOGBNAN (no signal is raised) + * ilogbl(+-Inf) = INT_MAX (no signal is raised) + */ + +#include +#include +#include + +int __ieee754_ilogbl (long double x) +{ + int64_t hx,lx; + int ix; + + GET_LDOUBLE_WORDS64(hx,lx,x); + hx &= 0x7fffffffffffffffLL; + if(hx <= 0x0001000000000000LL) { + if((hx|lx)==0) + return FP_ILOGB0; /* ilogbl(0) = FP_ILOGB0 */ + else /* subnormal x */ + if(hx==0) { + for (ix = -16431; lx>0; lx<<=1) ix -=1; + } else { + for (ix = -16382, hx<<=15; hx>0; hx<<=1) ix -=1; + } + return ix; + } + else if (hx<0x7fff000000000000LL) return (hx>>48)-0x3fff; + else if (FP_ILOGBNAN != INT_MAX) { + /* ISO C99 requires ilogbl(+-Inf) == INT_MAX. */ + if (((hx^0x7fff000000000000LL)|lx) == 0) + return INT_MAX; + } + return FP_ILOGBNAN; +} diff --git a/sysdeps/ieee754/ldbl-128/s_ilogbl.c b/sysdeps/ieee754/ldbl-128/s_ilogbl.c deleted file mode 100644 index d52eb050d4..0000000000 --- a/sysdeps/ieee754/ldbl-128/s_ilogbl.c +++ /dev/null @@ -1,57 +0,0 @@ -/* s_ilogbl.c -- long double version of s_ilogb.c. - * Conversion to IEEE quad long double by Jakub Jelinek, jj@ultra.linux.cz. - */ - -/* - * ==================================================== - * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. - * - * Developed at SunPro, a Sun Microsystems, Inc. business. - * Permission to use, copy, modify, and distribute this - * software is freely granted, provided that this notice - * is preserved. - * ==================================================== - */ - -#if defined(LIBM_SCCS) && !defined(lint) -static char rcsid[] = "$NetBSD: $"; -#endif - -/* ilogbl(long double x) - * return the binary exponent of non-zero x - * ilogbl(0) = FP_ILOGB0 - * ilogbl(NaN) = FP_ILOGBNAN (no signal is raised) - * ilogbl(+-Inf) = INT_MAX (no signal is raised) - */ - -#include -#include -#include - -int __ilogbl(long double x) -{ - int64_t hx,lx; - int ix; - - GET_LDOUBLE_WORDS64(hx,lx,x); - hx &= 0x7fffffffffffffffLL; - if(hx <= 0x0001000000000000LL) { - if((hx|lx)==0) - return FP_ILOGB0; /* ilogbl(0) = FP_ILOGB0 */ - else /* subnormal x */ - if(hx==0) { - for (ix = -16431; lx>0; lx<<=1) ix -=1; - } else { - for (ix = -16382, hx<<=15; hx>0; hx<<=1) ix -=1; - } - return ix; - } - else if (hx<0x7fff000000000000LL) return (hx>>48)-0x3fff; - else if (FP_ILOGBNAN != INT_MAX) { - /* ISO C99 requires ilogbl(+-Inf) == INT_MAX. */ - if (((hx^0x7fff000000000000LL)|lx) == 0) - return INT_MAX; - } - return FP_ILOGBNAN; -} -weak_alias (__ilogbl, ilogbl) diff --git a/sysdeps/ieee754/ldbl-64-128/e_ilogbl.c b/sysdeps/ieee754/ldbl-64-128/e_ilogbl.c new file mode 100644 index 0000000000..75a38e13ce --- /dev/null +++ b/sysdeps/ieee754/ldbl-64-128/e_ilogbl.c @@ -0,0 +1,2 @@ +#include +#include diff --git a/sysdeps/ieee754/ldbl-64-128/s_ilogbl.c b/sysdeps/ieee754/ldbl-64-128/s_ilogbl.c deleted file mode 100644 index bb88082405..0000000000 --- a/sysdeps/ieee754/ldbl-64-128/s_ilogbl.c +++ /dev/null @@ -1,5 +0,0 @@ -#include -#undef weak_alias -#define weak_alias(n,a) -#include -long_double_symbol (libm, __ilogbl, ilogbl); diff --git a/sysdeps/ieee754/ldbl-96/e_ilogbl.c b/sysdeps/ieee754/ldbl-96/e_ilogbl.c new file mode 100644 index 0000000000..0c7d9d5440 --- /dev/null +++ b/sysdeps/ieee754/ldbl-96/e_ilogbl.c @@ -0,0 +1,59 @@ +/* s_ilogbl.c -- long double version of s_ilogb.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. + * ==================================================== + */ + +#if defined(LIBM_SCCS) && !defined(lint) +static char rcsid[] = "$NetBSD: $"; +#endif + +/* ilogbl(long double x) + * return the binary exponent of non-zero x + * ilogbl(0) = FP_ILOGB0 + * ilogbl(NaN) = FP_ILOGBNAN (no signal is raised) + * ilogbl(+-Inf) = INT_MAX (no signal is raised) + */ + +#include +#include +#include + +int __ieee754_ilogbl (long double x) +{ + int32_t es,hx,lx,ix; + + GET_LDOUBLE_EXP(es,x); + es &= 0x7fff; + if(es==0) { + GET_LDOUBLE_WORDS(es,hx,lx,x); + if((hx|lx)==0) + return FP_ILOGB0; /* ilogbl(0) = FP_ILOGB0 */ + else /* subnormal x */ + if(hx==0) { + for (ix = -16415; lx>0; lx<<=1) ix -=1; + } else { + for (ix = -16383; hx>0; hx<<=1) ix -=1; + } + return ix; + } + else if (es<0x7fff) return es-0x3fff; + else if (FP_ILOGBNAN != INT_MAX) + { + GET_LDOUBLE_WORDS(es,hx,lx,x); + if (((hx & 0x7fffffff)|lx) == 0) + /* ISO C99 requires ilogbl(+-Inf) == INT_MAX. */ + return INT_MAX; + } + return FP_ILOGBNAN; +} diff --git a/sysdeps/ieee754/ldbl-96/s_ilogbl.c b/sysdeps/ieee754/ldbl-96/s_ilogbl.c deleted file mode 100644 index 7534599941..0000000000 --- a/sysdeps/ieee754/ldbl-96/s_ilogbl.c +++ /dev/null @@ -1,60 +0,0 @@ -/* s_ilogbl.c -- long double version of s_ilogb.c. - * Conversion to long double by Ulrich Drepper, - * Cygnus Support, drepper@cygnus.com. - */ - -/* - * ==================================================== - * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. - * - * Developed at SunPro, a Sun Microsystems, Inc. business. - * Permission to use, copy, modify, and distribute this - * software is freely granted, provided that this notice - * is preserved. - * ==================================================== - */ - -#if defined(LIBM_SCCS) && !defined(lint) -static char rcsid[] = "$NetBSD: $"; -#endif - -/* ilogbl(long double x) - * return the binary exponent of non-zero x - * ilogbl(0) = FP_ILOGB0 - * ilogbl(NaN) = FP_ILOGBNAN (no signal is raised) - * ilogbl(+-Inf) = INT_MAX (no signal is raised) - */ - -#include -#include -#include - -int __ilogbl(long double x) -{ - int32_t es,hx,lx,ix; - - GET_LDOUBLE_EXP(es,x); - es &= 0x7fff; - if(es==0) { - GET_LDOUBLE_WORDS(es,hx,lx,x); - if((hx|lx)==0) - return FP_ILOGB0; /* ilogbl(0) = FP_ILOGB0 */ - else /* subnormal x */ - if(hx==0) { - for (ix = -16415; lx>0; lx<<=1) ix -=1; - } else { - for (ix = -16383; hx>0; hx<<=1) ix -=1; - } - return ix; - } - else if (es<0x7fff) return es-0x3fff; - else if (FP_ILOGBNAN != INT_MAX) - { - GET_LDOUBLE_WORDS(es,hx,lx,x); - if (((hx & 0x7fffffff)|lx) == 0) - /* ISO C99 requires ilogbl(+-Inf) == INT_MAX. */ - return INT_MAX; - } - return FP_ILOGBNAN; -} -weak_alias (__ilogbl, ilogbl) diff --git a/sysdeps/sparc/sparc64/soft-fp/e_ilogbl.c b/sysdeps/sparc/sparc64/soft-fp/e_ilogbl.c new file mode 100644 index 0000000000..e24eee251e --- /dev/null +++ b/sysdeps/sparc/sparc64/soft-fp/e_ilogbl.c @@ -0,0 +1,79 @@ +/* Software floating-point emulation. + ilogbl(x, exp) + Copyright (C) 1999, 2012 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek (jj@ultra.linux.cz). + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +/* ilogbl(long double x) + * return the binary exponent of non-zero x + * ilogbl(0) = 0x80000001 + * ilogbl(inf/NaN) = 0x7fffffff (no signal is raised) + */ + +#include "soft-fp.h" +#include "quad.h" +#include + +int __ieee754_ilogbl (long double x) +{ + FP_DECL_EX; + FP_DECL_Q(X); + +/* + FP_UNPACK_Q(X, x); + switch (X_c) + { + case FP_CLS_ZERO: + return FP_ILOGB0; + case FP_CLS_NAN: + case FP_CLS_INF: + return FP_ILOGBNAN; + default: + return X_e; + } + */ + FP_UNPACK_RAW_Q(X, x); + switch (X_e) + { + default: + return X_e - _FP_EXPBIAS_Q; + case 0: +#if (2 * _FP_W_TYPE_SIZE) < _FP_FRACBITS_Q + if (_FP_FRAC_ZEROP_4(X)) + return FP_ILOGB0; + else + { + _FP_I_TYPE shift; + _FP_FRAC_CLZ_4(shift, X); + shift -= _FP_FRACXBITS_Q; + return X_e - _FP_EXPBIAS_Q - 1 + shift; + } +#else + if (_FP_FRAC_ZEROP_2(X)) + return FP_ILOGB0; + else + { + _FP_I_TYPE shift; + _FP_FRAC_CLZ_2(shift, X); + shift -= _FP_FRACXBITS_Q; + return X_e - _FP_EXPBIAS_Q - 1 + shift; + } +#endif + case _FP_EXPBIAS_Q: + return FP_ILOGBNAN; + } +} diff --git a/sysdeps/sparc/sparc64/soft-fp/s_ilogbl.c b/sysdeps/sparc/sparc64/soft-fp/s_ilogbl.c deleted file mode 100644 index 6d8bd00cc1..0000000000 --- a/sysdeps/sparc/sparc64/soft-fp/s_ilogbl.c +++ /dev/null @@ -1,81 +0,0 @@ -/* Software floating-point emulation. - ilogbl(x, exp) - Copyright (C) 1999 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Jakub Jelinek (jj@ultra.linux.cz). - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -/* ilogbl(long double x) - * return the binary exponent of non-zero x - * ilogbl(0) = 0x80000001 - * ilogbl(inf/NaN) = 0x7fffffff (no signal is raised) - */ - -#include "soft-fp.h" -#include "quad.h" -#include - -int __ilogbl(long double x) -{ - FP_DECL_EX; - FP_DECL_Q(X); - -/* - FP_UNPACK_Q(X, x); - switch (X_c) - { - case FP_CLS_ZERO: - return FP_ILOGB0; - case FP_CLS_NAN: - case FP_CLS_INF: - return FP_ILOGBNAN; - default: - return X_e; - } - */ - FP_UNPACK_RAW_Q(X, x); - switch (X_e) - { - default: - return X_e - _FP_EXPBIAS_Q; - case 0: -#if (2 * _FP_W_TYPE_SIZE) < _FP_FRACBITS_Q - if (_FP_FRAC_ZEROP_4(X)) - return FP_ILOGB0; - else - { - _FP_I_TYPE shift; - _FP_FRAC_CLZ_4(shift, X); - shift -= _FP_FRACXBITS_Q; - return X_e - _FP_EXPBIAS_Q - 1 + shift; - } -#else - if (_FP_FRAC_ZEROP_2(X)) - return FP_ILOGB0; - else - { - _FP_I_TYPE shift; - _FP_FRAC_CLZ_2(shift, X); - shift -= _FP_FRACXBITS_Q; - return X_e - _FP_EXPBIAS_Q - 1 + shift; - } -#endif - case _FP_EXPBIAS_Q: - return FP_ILOGBNAN; - } -} - -weak_alias (__ilogbl, ilogbl) -- cgit 1.4.1