Mercurial > gnulib
view tests/test-cbrt.h @ 40206:770a5696761e
relocatable-prog: Use wrapper-free installation on Mac OS X, take 2.
This approach supports relocatable installation of shared libraries
which depend on other shared libraries from the same package.
* m4/relocatable.m4 (gl_RELOCATABLE_BODY): Determine use_macos_tools.
If use_macos_tools is true, use reloc-ldflags and set LIBTOOL to be a
wrapper around the original LIBTOOL.
* build-aux/reloc-ldflags: Add support for Mac OS X, which uses the
token '@loader_path' instead of '$ORIGIN'.
* build-aux/libtool-reloc: New file.
* modules/relocatable-prog (Files): Add it.
* doc/relocatable-maint.texi (Supporting Relocation): Update to match
the recent changes. Document the need to set the *_LDFLAGS of libraries.
RELOCATABLE_LIBRARY_PATH and RELOCATABLE_CONFIG_H_DIR should be set in
Makefile.am, not in configure.ac.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Mon, 04 Mar 2019 17:25:09 +0100 |
parents | b06060465f09 |
children |
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/* Test of cbrt*() function family. Copyright (C) 2012-2019 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>. */ static void test_function (void) { int i; int j; const DOUBLE TWO_MANT_DIG = /* Assume MANT_DIG <= 5 * 31. Use the identity n = floor(n/5) + floor((n+1)/5) + ... + floor((n+4)/5). */ (DOUBLE) (1U << ((MANT_DIG - 1) / 5)) * (DOUBLE) (1U << ((MANT_DIG - 1 + 1) / 5)) * (DOUBLE) (1U << ((MANT_DIG - 1 + 2) / 5)) * (DOUBLE) (1U << ((MANT_DIG - 1 + 3) / 5)) * (DOUBLE) (1U << ((MANT_DIG - 1 + 4) / 5)); /* Randomized tests. */ for (i = 0; i < SIZEOF (RANDOM); i++) { DOUBLE x = L_(32.0) * RANDOM[i] - L_(16.0); /* -16.0 <= x <= 16.0 */ DOUBLE y = CBRT (x); DOUBLE err = y * y * y - x; ASSERT (err > - L_(4.0) * L_(16.0) / TWO_MANT_DIG && err < L_(4.0) * L_(16.0) / TWO_MANT_DIG); } for (i = 0; i < SIZEOF (RANDOM) / 5; i++) for (j = 0; j < SIZEOF (RANDOM) / 5; j++) { DOUBLE x = L_(32.0) * RANDOM[i] - L_(16.0); /* -16.0 <= x <= 16.0 */ DOUBLE y = L_(32.0) * RANDOM[j] - L_(16.0); /* -16.0 <= y <= 16.0 */ if (x != L_(0.0) && y != L_(0.0)) { DOUBLE z = L_(1.0) / (x * y); /* Approximately x * y * z = 1. */ DOUBLE p = CBRT (x) * CBRT (y) * CBRT (z); ASSERT (p > L_(1.0) - L_(8.0) / TWO_MANT_DIG && p < L_(1.0) + L_(8.0) / TWO_MANT_DIG); } } } volatile DOUBLE x; DOUBLE y;