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| // RUN: %clang_builtins %s %librt -o %t && %run %t
// REQUIRES: librt_has_fixunssfdi
//===-- fixunssfdi_test.c - Test __fixunssfdi -----------------------------===//
//
// 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 __fixunssfdi for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#include "int_lib.h"
#include <stdio.h>
// Returns: convert a to a unsigned long long, rounding toward zero.
// Negative values all become zero.
// Assumption: float is a IEEE 32 bit floating point type
// du_int is a 64 bit integral type
// value in float is representable in du_int or is negative
// (no range checking performed)
// seee eeee emmm mmmm mmmm mmmm mmmm mmmm
COMPILER_RT_ABI du_int __fixunssfdi(float a);
int test__fixunssfdi(float a, du_int expected)
{
du_int x = __fixunssfdi(a);
if (x != expected)
printf("error in __fixunssfdi(%A) = %llX, expected %llX\n",
a, x, expected);
return x != expected;
}
char assumption_1[sizeof(du_int) == 2*sizeof(si_int)] = {0};
char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
int main()
{
if (test__fixunssfdi(0.0F, 0))
return 1;
if (test__fixunssfdi(0.5F, 0))
return 1;
if (test__fixunssfdi(0.99F, 0))
return 1;
if (test__fixunssfdi(1.0F, 1))
return 1;
if (test__fixunssfdi(1.5F, 1))
return 1;
if (test__fixunssfdi(1.99F, 1))
return 1;
if (test__fixunssfdi(2.0F, 2))
return 1;
if (test__fixunssfdi(2.01F, 2))
return 1;
if (test__fixunssfdi(-0.5F, 0))
return 1;
if (test__fixunssfdi(-0.99F, 0))
return 1;
#if !TARGET_LIBGCC
if (test__fixunssfdi(-1.0F, 0)) // libgcc ignores "returns 0 for negative input" spec
return 1;
if (test__fixunssfdi(-1.5F, 0))
return 1;
if (test__fixunssfdi(-1.99F, 0))
return 1;
if (test__fixunssfdi(-2.0F, 0))
return 1;
if (test__fixunssfdi(-2.01F, 0))
return 1;
#endif
if (test__fixunssfdi(0x1.FFFFFEp+63F, 0xFFFFFF0000000000LL))
return 1;
if (test__fixunssfdi(0x1.000000p+63F, 0x8000000000000000LL))
return 1;
if (test__fixunssfdi(0x1.FFFFFEp+62F, 0x7FFFFF8000000000LL))
return 1;
if (test__fixunssfdi(0x1.FFFFFCp+62F, 0x7FFFFF0000000000LL))
return 1;
#if !TARGET_LIBGCC
if (test__fixunssfdi(-0x1.FFFFFEp+62F, 0x0000000000000000LL))
return 1;
if (test__fixunssfdi(-0x1.FFFFFCp+62F, 0x0000000000000000LL))
return 1;
#endif
return 0;
}
|