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// RUN: %clang_builtins %s %librt -o %t && %run %t
//===-- floatdidf.c - Test __floatdidf ------------------------------------===//
//
// 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 __floatdidf for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#include "int_lib.h"
#include <float.h>
#include <stdio.h>
// Returns: convert a to a double, rounding toward even.
// Assumption: double is a IEEE 64 bit floating point type
// di_int is a 64 bit integral type
// seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
COMPILER_RT_ABI double __floatdidf(di_int a);
int test__floatdidf(di_int a, double expected)
{
double x = __floatdidf(a);
if (x != expected)
printf("error in __floatdidf(%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(double)*CHAR_BIT == 64] = {0};
int main()
{
if (test__floatdidf(0, 0.0))
return 1;
if (test__floatdidf(1, 1.0))
return 1;
if (test__floatdidf(2, 2.0))
return 1;
if (test__floatdidf(20, 20.0))
return 1;
if (test__floatdidf(-1, -1.0))
return 1;
if (test__floatdidf(-2, -2.0))
return 1;
if (test__floatdidf(-20, -20.0))
return 1;
if (test__floatdidf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))
return 1;
if (test__floatdidf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))
return 1;
if (test__floatdidf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))
return 1;
if (test__floatdidf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))
return 1;
if (test__floatdidf(0x8000008000000000LL, -0x1.FFFFFEp+62))
return 1;
if (test__floatdidf(0x8000000000000800LL, -0x1.FFFFFFFFFFFFEp+62))
return 1;
if (test__floatdidf(0x8000010000000000LL, -0x1.FFFFFCp+62))
return 1;
if (test__floatdidf(0x8000000000001000LL, -0x1.FFFFFFFFFFFFCp+62))
return 1;
if (test__floatdidf(0x8000000000000000LL, -0x1.000000p+63))
return 1;
if (test__floatdidf(0x8000000000000001LL, -0x1.000000p+63))
return 1;
if (test__floatdidf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
return 1;
if (test__floatdidf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
return 1;
if (test__floatdidf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
return 1;
if (test__floatdidf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
return 1;
if (test__floatdidf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
return 1;
if (test__floatdidf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
return 1;
if (test__floatdidf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
return 1;
if (test__floatdidf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
return 1;
if (test__floatdidf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
return 1;
if (test__floatdidf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
return 1;
if (test__floatdidf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
return 1;
if (test__floatdidf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
return 1;
if (test__floatdidf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496Dp+57))
return 1;
if (test__floatdidf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496Ep+57))
return 1;
if (test__floatdidf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496Ep+57))
return 1;
if (test__floatdidf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496Ep+57))
return 1;
if (test__floatdidf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496Ep+57))
return 1;
if (test__floatdidf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496Ep+57))
return 1;
if (test__floatdidf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496Ep+57))
return 1;
if (test__floatdidf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496Ep+57))
return 1;
if (test__floatdidf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496Ep+57))
return 1;
if (test__floatdidf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496Ep+57))
return 1;
if (test__floatdidf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496Fp+57))
return 1;
if (test__floatdidf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496Fp+57))
return 1;
if (test__floatdidf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496Fp+57))
return 1;
if (test__floatdidf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
return 1;
return 0;
}
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