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Diffstat (limited to 'lib/msun/tests/lrint_test.c')
| -rw-r--r-- | lib/msun/tests/lrint_test.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/lib/msun/tests/lrint_test.c b/lib/msun/tests/lrint_test.c new file mode 100644 index 0000000..ba099aa --- /dev/null +++ b/lib/msun/tests/lrint_test.c @@ -0,0 +1,149 @@ +/*- + * 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); +} |
