floatunditf_test.c
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// RUN: %clang_builtins %s %librt -o %t && %run %t
// REQUIRES: librt_has_floatunditf
//===-- floatunditf_test.c - Test __floatunditf ---------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file tests __floatunditf for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#include "int_lib.h"
#include <math.h>
#include <complex.h>
#include <stdio.h>
#if __LDBL_MANT_DIG__ == 113
#include "fp_test.h"
// Returns: long integer converted to long double
COMPILER_RT_ABI long double __floatunditf(unsigned long long a);
int test__floatunditf(unsigned long long a, uint64_t expectedHi, uint64_t expectedLo)
{
long double x = __floatunditf(a);
int ret = compareResultLD(x, expectedHi, expectedLo);
if (ret)
printf("error in __floatunditf(%Lu) = %.20Lf, "
"expected %.20Lf\n", a, x, fromRep128(expectedHi, expectedLo));
return ret;
}
char assumption_1[sizeof(long double) * CHAR_BIT == 128] = {0};
#endif
int main()
{
#if __LDBL_MANT_DIG__ == 113
if (test__floatunditf(0xffffffffffffffffULL, UINT64_C(0x403effffffffffff), UINT64_C(0xfffe000000000000)))
return 1;
if (test__floatunditf(0xfffffffffffffffeULL, UINT64_C(0x403effffffffffff), UINT64_C(0xfffc000000000000)))
return 1;
if (test__floatunditf(0x8000000000000000ULL, UINT64_C(0x403e000000000000), UINT64_C(0x0)))
return 1;
if (test__floatunditf(0x7fffffffffffffffULL, UINT64_C(0x403dffffffffffff), UINT64_C(0xfffc000000000000)))
return 1;
if (test__floatunditf(0x123456789abcdef1ULL, UINT64_C(0x403b23456789abcd), UINT64_C(0xef10000000000000)))
return 1;
if (test__floatunditf(0x2ULL, UINT64_C(0x4000000000000000), UINT64_C(0x0)))
return 1;
if (test__floatunditf(0x1ULL, UINT64_C(0x3fff000000000000), UINT64_C(0x0)))
return 1;
if (test__floatunditf(0x0ULL, UINT64_C(0x0), UINT64_C(0x0)))
return 1;
#else
printf("skipped\n");
#endif
return 0;
}