mirror of
git://sourceware.org/git/newlib-cygwin.git
synced 2025-01-21 05:49:19 +08:00
048ebea981
Rename s_nearbyint.c, s_fdim.c and s_scalbln.c to remove conflicts
Remove functions that are not needed from above files
Modify include paths
Add includes missing in cygwin build
Add missing types
Create Makefiles
Create header files to resolve dependencies between directories
Modify some instances of unsigned long to uint64_t for 32 bit platforms
Add HAVE_FPMATH_H
69 lines
2.4 KiB
C
69 lines
2.4 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2004 David Schultz <das@FreeBSD.ORG>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <fenv.h>
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#include <math.h>
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/*
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* We save and restore the floating-point environment to avoid raising
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* an inexact exception. We can get away with using fesetenv()
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* instead of feclearexcept()/feupdateenv() to restore the environment
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* because the only exception defined for rint() is overflow, and
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* rounding can't overflow as long as emax >= p.
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*
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* The volatile keyword is needed below because clang incorrectly assumes
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* that rint won't raise any floating-point exceptions. Declaring ret volatile
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* is sufficient to trick the compiler into doing the right thing.
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*/
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#define DECL(type, fn, rint) \
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type \
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fn(type x) \
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{ \
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volatile type ret; \
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fenv_t env; \
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\
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fegetenv(&env); \
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ret = rint(x); \
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fesetenv(&env); \
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return (ret); \
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}
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/*
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* nearbyint and nearbyintf are defined elsewhere in
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* newlib. Ignore the freebsd versions and only compile
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* nearbyintl.
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*/
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#if 0
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DECL(double, nearbyint, rint)
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DECL(float, nearbyintf, rintf)
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#endif
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DECL(long double, nearbyintl, rintl)
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