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>

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