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| // RUN: %clang_builtins %s %librt -o %t && %run %t
// REQUIRES: librt_has_fixunsxfsi
//===-- fixunsxfsi_test.c - Test __fixunsxfsi -----------------------------===//
//
// 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 __fixunsxfsi for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#include "int_lib.h"
#include <stdio.h>
#if HAS_80_BIT_LONG_DOUBLE
// Returns: convert a to a unsigned int, rounding toward zero.
// Negative values all become zero.
// Assumption: long double is an intel 80 bit floating point type padded with 6 bytes
// su_int is a 32 bit integral type
// value in long double is representable in su_int or is negative
// (no range checking performed)
// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
// 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
COMPILER_RT_ABI su_int __fixunsxfsi(long double a);
int test__fixunsxfsi(long double a, su_int expected)
{
su_int x = __fixunsxfsi(a);
if (x != expected)
printf("error in __fixunsxfsi(%LA) = %X, expected %X\n", a, x, expected);
return x != expected;
}
char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
#endif
int main()
{
#if HAS_80_BIT_LONG_DOUBLE
if (test__fixunsxfsi(0.0, 0))
return 1;
if (test__fixunsxfsi(0.5, 0))
return 1;
if (test__fixunsxfsi(0.99, 0))
return 1;
if (test__fixunsxfsi(1.0, 1))
return 1;
if (test__fixunsxfsi(1.5, 1))
return 1;
if (test__fixunsxfsi(1.99, 1))
return 1;
if (test__fixunsxfsi(2.0, 2))
return 1;
if (test__fixunsxfsi(2.01, 2))
return 1;
if (test__fixunsxfsi(-0.5, 0))
return 1;
if (test__fixunsxfsi(-0.99, 0))
return 1;
#if !TARGET_LIBGCC
if (test__fixunsxfsi(-1.0, 0)) // libgcc ignores "returns 0 for negative input" spec
return 1;
if (test__fixunsxfsi(-1.5, 0))
return 1;
if (test__fixunsxfsi(-1.99, 0))
return 1;
if (test__fixunsxfsi(-2.0, 0))
return 1;
if (test__fixunsxfsi(-2.01, 0))
return 1;
#endif
if (test__fixunsxfsi(0x1.000000p+31, 0x80000000))
return 1;
if (test__fixunsxfsi(0x1.FFFFFEp+31, 0xFFFFFF00))
return 1;
if (test__fixunsxfsi(0x1.FFFFFEp+30, 0x7FFFFF80))
return 1;
if (test__fixunsxfsi(0x1.FFFFFCp+30, 0x7FFFFF00))
return 1;
#if !TARGET_LIBGCC
if (test__fixunsxfsi(-0x1.FFFFFEp+30, 0))
return 1;
if (test__fixunsxfsi(-0x1.FFFFFCp+30, 0))
return 1;
#endif
if (test__fixunsxfsi(0x1.FFFFFFFEp+31, 0xFFFFFFFF))
return 1;
if (test__fixunsxfsi(0x1.FFFFFFFC00000p+30, 0x7FFFFFFF))
return 1;
if (test__fixunsxfsi(0x1.FFFFFFF800000p+30, 0x7FFFFFFE))
return 1;
#endif
return 0;
}
|