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| // RUN: %clang_builtins %s %librt -o %t && %run %t
// REQUIRES: librt_has_fixunssfsi
//===-- fixunssfsi_test.c - Test __fixunssfsi -----------------------------===//
//
// 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 __fixunssfsi for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#include "int_lib.h"
#include <stdio.h>
// Returns: convert a to a unsigned int, rounding toward zero.
// Negative values all become zero.
// Assumption: float is a IEEE 32 bit floating point type
// su_int is a 32 bit integral type
// value in float is representable in su_int or is negative
// (no range checking performed)
// seee eeee emmm mmmm mmmm mmmm mmmm mmmm
COMPILER_RT_ABI su_int __fixunssfsi(float a);
int test__fixunssfsi(float a, su_int expected)
{
su_int x = __fixunssfsi(a);
if (x != expected)
printf("error in __fixunssfsi(%A) = %X, expected %X\n", a, x, expected);
return x != expected;
}
char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
int main()
{
if (test__fixunssfsi(0.0F, 0))
return 1;
if (test__fixunssfsi(0.5F, 0))
return 1;
if (test__fixunssfsi(0.99F, 0))
return 1;
if (test__fixunssfsi(1.0F, 1))
return 1;
if (test__fixunssfsi(1.5F, 1))
return 1;
if (test__fixunssfsi(1.99F, 1))
return 1;
if (test__fixunssfsi(2.0F, 2))
return 1;
if (test__fixunssfsi(2.01F, 2))
return 1;
if (test__fixunssfsi(-0.5F, 0))
return 1;
if (test__fixunssfsi(-0.99F, 0))
return 1;
#if !TARGET_LIBGCC
if (test__fixunssfsi(-1.0F, 0)) // libgcc ignores "returns 0 for negative input" spec
return 1;
if (test__fixunssfsi(-1.5F, 0))
return 1;
if (test__fixunssfsi(-1.99F, 0))
return 1;
if (test__fixunssfsi(-2.0F, 0))
return 1;
if (test__fixunssfsi(-2.01F, 0))
return 1;
#endif
if (test__fixunssfsi(0x1.000000p+31F, 0x80000000))
return 1;
if (test__fixunssfsi(0x1.000000p+32F, 0xFFFFFFFF))
return 1;
if (test__fixunssfsi(0x1.FFFFFEp+31F, 0xFFFFFF00))
return 1;
if (test__fixunssfsi(0x1.FFFFFEp+30F, 0x7FFFFF80))
return 1;
if (test__fixunssfsi(0x1.FFFFFCp+30F, 0x7FFFFF00))
return 1;
#if !TARGET_LIBGCC
if (test__fixunssfsi(-0x1.FFFFFEp+30F, 0))
return 1;
if (test__fixunssfsi(-0x1.FFFFFCp+30F, 0))
return 1;
#endif
return 0;
}
|