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math: Use wordsize-64 version for finite
- math.h will use compiler builtin for gcc 4.4 when built without -fsignaling-nans and the builtin is expanded inline for all support architectures. As an example, there is no intra finite call on libm for the architecture I checked, x86, arm, aarch64, and powerpc. - The resulting binary difference on 32 bits architecture is minimum for the non hotspot symbol. - It helps wordsize-64 architectures that use ldbl-opt. - It add some code simplification with reduction of duplicated implementations. Checked on powerpc-linux-gnu (built without --with-cpu, with --with-cpu=power4 and with --with-cpu=power5+ and --disable-multi-arch), powerpc64-linux-gnu (built without --with-cp and with --with-cpu=power5+ and --disable-multi-arch). * sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c: Move to ... * sysdeps/ieee754/dbl-64/s_finite.c: ... here and format code. Reviewed-by: Gabriel F. T. Gomes <gabrielftg@linux.ibm.com>
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@ -1,5 +1,8 @@
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2019-06-12 Adhemerval Zanella <adhemerval.zanella@linaro.org>
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* sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c: Move to ...
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* sysdeps/ieee754/dbl-64/s_finite.c: ... here and format code.
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* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/Makefile
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(sysdeps_routines, libm-sysdep_routines): Remove s_isinf* and s_isinf*
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objects.
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@ -1,4 +1,3 @@
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/* @(#)s_finite.c 5.1 93/09/24 */
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/*
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* ====================================================
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* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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@ -10,10 +9,6 @@
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* ====================================================
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*/
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#if defined(LIBM_SCCS) && !defined(lint)
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static char rcsid[] = "$NetBSD: s_finite.c,v 1.8 1995/05/10 20:47:17 jtc Exp $";
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#endif
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/*
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* finite(x) returns 1 is x is finite, else 0;
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* no branching!
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@ -23,18 +18,15 @@ static char rcsid[] = "$NetBSD: s_finite.c,v 1.8 1995/05/10 20:47:17 jtc Exp $";
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#include <math_private.h>
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#include <ldbl-classify-compat.h>
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#include <shlib-compat.h>
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#include <stdint.h>
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#undef __finite
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#ifndef FINITE
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# define FINITE __finite
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#endif
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int FINITE(double x)
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int
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__finite (double x)
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{
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int32_t hx;
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GET_HIGH_WORD (hx, x);
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return (int) ((uint32_t) ((hx & 0x7ff00000) - 0x7ff00000) >> 31);
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int64_t lx;
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EXTRACT_WORDS64 (lx,x);
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return (int)((uint64_t)((lx & INT64_C(0x7ff0000000000000))
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- INT64_C (0x7ff0000000000000)) >> 63);
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}
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hidden_def (__finite)
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weak_alias (__finite, finite)
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@ -1,43 +0,0 @@
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/*
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* ====================================================
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* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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*
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* Developed at SunPro, a Sun Microsystems, Inc. business.
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* Permission to use, copy, modify, and distribute this
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* software is freely granted, provided that this notice
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* is preserved.
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* ====================================================
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*/
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/*
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* finite(x) returns 1 is x is finite, else 0;
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* no branching!
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*/
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#include <math.h>
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#include <math_private.h>
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#include <ldbl-classify-compat.h>
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#include <shlib-compat.h>
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#include <stdint.h>
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#undef __finite
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int
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__finite(double x)
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{
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int64_t lx;
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EXTRACT_WORDS64(lx,x);
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return (int)((uint64_t)((lx&INT64_C(0x7ff0000000000000))-INT64_C(0x7ff0000000000000))>>63);
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}
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hidden_def (__finite)
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weak_alias (__finite, finite)
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#ifdef NO_LONG_DOUBLE
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# if LDBL_CLASSIFY_COMPAT
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# if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_23)
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compat_symbol (libc, __finite, __finitel, GLIBC_2_0);
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# endif
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# if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_23)
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compat_symbol (libm, __finite, __finitel, GLIBC_2_1);
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# endif
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# endif
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weak_alias (__finite, finitel)
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#endif
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