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/*-
* Copyright (c) 2005-2008 David Schultz <das@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Test for lrint(), lrintf(), llrint(), and llrintf().
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <assert.h>
#include <fenv.h>
#include <limits.h>
#include <math.h>
#include <stdio.h>
#ifdef __i386__
#include <ieeefp.h>
#endif
/*
* XXX The volatile here is to avoid gcc's bogus constant folding and work
* around the lack of support for the FENV_ACCESS pragma.
*/
#define test(func, x, result, excepts) do { \
volatile double _d = x; \
assert(feclearexcept(FE_ALL_EXCEPT) == 0); \
assert((func)(_d) == (result) || fetestexcept(FE_INVALID)); \
assert(fetestexcept(FE_ALL_EXCEPT) == (excepts)); \
} while (0)
#define testall(x, result, excepts) do { \
test(lrint, x, result, excepts); \
test(lrintf, x, result, excepts); \
test(lrintl, x, result, excepts); \
test(llrint, x, result, excepts); \
test(llrintf, x, result, excepts); \
test(llrintl, x, result, excepts); \
} while (0)
#define IGNORE 0
#pragma STDC FENV_ACCESS ON
void
run_tests(void)
{
assert(fesetround(FE_DOWNWARD) == 0);
testall(0.75, 0, FE_INEXACT);
testall(-0.5, -1, FE_INEXACT);
assert(fesetround(FE_TONEAREST) == 0);
testall(0.0, 0, 0);
testall(0.25, 0, FE_INEXACT);
testall(0.5, 0, FE_INEXACT);
testall(-2.5, -2, FE_INEXACT);
testall(1.0, 1, 0);
testall(0x12345000p0, 0x12345000, 0);
testall(0x1234.fp0, 0x1235, FE_INEXACT);
testall(INFINITY, IGNORE, FE_INVALID);
testall(NAN, IGNORE, FE_INVALID);
#if (LONG_MAX == 0x7fffffffl)
assert(fesetround(FE_UPWARD) == 0);
test(lrint, 0x7fffffff.8p0, IGNORE, FE_INVALID);
test(lrint, -0x80000000.4p0, -0x80000000l, FE_INEXACT);
assert(fesetround(FE_DOWNWARD) == 0);
test(lrint, -0x80000000.8p0, IGNORE, FE_INVALID);
test(lrint, 0x80000000.0p0, IGNORE, FE_INVALID);
test(lrint, 0x7fffffff.4p0, 0x7fffffffl, FE_INEXACT);
test(lrintf, 0x80000000.0p0f, IGNORE, FE_INVALID);
test(lrintf, 0x7fffff80.0p0f, 0x7fffff80l, 0);
assert(fesetround(FE_TOWARDZERO) == 0);
test(lrint, 0x7fffffff.8p0, 0x7fffffffl, FE_INEXACT);
test(lrint, -0x80000000.8p0, -0x80000000l, FE_INEXACT);
test(lrint, 0x80000000.0p0, IGNORE, FE_INVALID);
test(lrintf, 0x80000000.0p0f, IGNORE, FE_INVALID);
test(lrintf, 0x7fffff80.0p0f, 0x7fffff80l, 0);
#elif (LONG_MAX == 0x7fffffffffffffffll)
assert(fesetround(FE_TONEAREST) == 0);
test(lrint, 0x8000000000000000.0p0, IGNORE, FE_INVALID);
test(lrintf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID);
test(lrint, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00l, 0);
test(lrintf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000l, 0);
test(lrint, -0x8000000000000800.0p0, IGNORE, FE_INVALID);
test(lrintf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID);
test(lrint, -0x8000000000000000.0p0, -0x8000000000000000l, 0);
test(lrintf, -0x8000000000000000.0p0f, -0x8000000000000000l, 0);
#else
#error "Unsupported long size"
#endif
#if (LLONG_MAX == 0x7fffffffffffffffLL)
assert(fesetround(FE_TONEAREST) == 0);
test(llrint, 0x8000000000000000.0p0, IGNORE, FE_INVALID);
test(llrintf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID);
test(llrint, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00ll, 0);
test(llrintf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000ll, 0);
test(llrint, -0x8000000000000800.0p0, IGNORE, FE_INVALID);
test(llrintf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID);
test(llrint, -0x8000000000000000.0p0, -0x8000000000000000ll, 0);
test(llrintf, -0x8000000000000000.0p0f, -0x8000000000000000ll, 0);
#else
#error "Unsupported long long size"
#endif
}
int
main(int argc, char *argv[])
{
printf("1..1\n");
run_tests();
#ifdef __i386__
fpsetprec(FP_PE);
run_tests();
#endif
printf("ok 1 - lrint\n");
return (0);
}
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