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author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2019-03-26 17:47:54 +0000 |
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committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2019-06-12 14:32:39 -0300 |
commit | a72186761b2ed913fd5ea3df2de2aa446456aa98 (patch) | |
tree | 23c6543f27da2882bd7bd53f7d48c389a6bf47b6 /sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c | |
parent | 6427a6ac8cfe6c6e64214db606c5dced67213e8d (diff) | |
download | glibc-a72186761b2ed913fd5ea3df2de2aa446456aa98.tar.gz glibc-a72186761b2ed913fd5ea3df2de2aa446456aa98.tar.xz glibc-a72186761b2ed913fd5ea3df2de2aa446456aa98.zip |
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>
Diffstat (limited to 'sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c')
-rw-r--r-- | sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c b/sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c deleted file mode 100644 index 40676924fe..0000000000 --- a/sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c +++ /dev/null @@ -1,43 +0,0 @@ -/* - * ==================================================== - * 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. - * ==================================================== - */ - -/* - * finite(x) returns 1 is x is finite, else 0; - * no branching! - */ - -#include <math.h> -#include <math_private.h> -#include <ldbl-classify-compat.h> -#include <shlib-compat.h> -#include <stdint.h> - -#undef __finite -int -__finite(double x) -{ - int64_t lx; - EXTRACT_WORDS64(lx,x); - return (int)((uint64_t)((lx&INT64_C(0x7ff0000000000000))-INT64_C(0x7ff0000000000000))>>63); -} -hidden_def (__finite) -weak_alias (__finite, finite) -#ifdef NO_LONG_DOUBLE -# if LDBL_CLASSIFY_COMPAT -# if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_23) -compat_symbol (libc, __finite, __finitel, GLIBC_2_0); -# endif -# if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_23) -compat_symbol (libm, __finite, __finitel, GLIBC_2_1); -# endif -# endif -weak_alias (__finite, finitel) -#endif |