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| // RUN: %clang_builtins %s %librt -o %t && %run %t
// REQUIRES: librt_has_floatdisf
//===-- floatdisf_test.c - Test __floatdisf -------------------------------===//
//
// 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 __floatdisf for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#include "int_lib.h"
#include <float.h>
#include <stdio.h>
// Returns: convert a to a float, rounding toward even.
// Assumption: float is a IEEE 32 bit floating point type
// di_int is a 64 bit integral type
// seee eeee emmm mmmm mmmm mmmm mmmm mmmm
COMPILER_RT_ABI float __floatdisf(di_int a);
int test__floatdisf(di_int a, float expected)
{
float x = __floatdisf(a);
if (x != expected)
printf("error in __floatdisf(%llX) = %a, expected %a\n",
a, x, expected);
return x != expected;
}
char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0};
char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
int main()
{
if (test__floatdisf(0, 0.0F))
return 1;
if (test__floatdisf(1, 1.0F))
return 1;
if (test__floatdisf(2, 2.0F))
return 1;
if (test__floatdisf(-1, -1.0F))
return 1;
if (test__floatdisf(-2, -2.0F))
return 1;
if (test__floatdisf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62F))
return 1;
if (test__floatdisf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62F))
return 1;
if (test__floatdisf(0x8000008000000000LL, -0x1.FFFFFEp+62F))
return 1;
if (test__floatdisf(0x8000010000000000LL, -0x1.FFFFFCp+62F))
return 1;
if (test__floatdisf(0x8000000000000000LL, -0x1.000000p+63F))
return 1;
if (test__floatdisf(0x8000000000000001LL, -0x1.000000p+63F))
return 1;
if (test__floatdisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F))
return 1;
if (test__floatdisf(0x0007FB72EA000000LL, 0x1.FEDCBAp+50F))
return 1;
if (test__floatdisf(0x0007FB72EB000000LL, 0x1.FEDCBAp+50F))
return 1;
if (test__floatdisf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAp+50F))
return 1;
if (test__floatdisf(0x0007FB72EC000000LL, 0x1.FEDCBCp+50F))
return 1;
if (test__floatdisf(0x0007FB72E8000001LL, 0x1.FEDCBAp+50F))
return 1;
if (test__floatdisf(0x0007FB72E6000000LL, 0x1.FEDCBAp+50F))
return 1;
if (test__floatdisf(0x0007FB72E7000000LL, 0x1.FEDCBAp+50F))
return 1;
if (test__floatdisf(0x0007FB72E7FFFFFFLL, 0x1.FEDCBAp+50F))
return 1;
if (test__floatdisf(0x0007FB72E4000001LL, 0x1.FEDCBAp+50F))
return 1;
if (test__floatdisf(0x0007FB72E4000000LL, 0x1.FEDCB8p+50F))
return 1;
return 0;
}
|