57b08b0944
to reflect the new license. These used slightly different spellings that defeated my regular expressions. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351648
138 lines
4.7 KiB
C
138 lines
4.7 KiB
C
// RUN: %clang_builtins %s %librt -o %t && %run %t
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//===-- floatdidf.c - Test __floatdidf ------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file tests __floatdidf for the compiler_rt library.
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//
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//===----------------------------------------------------------------------===//
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#include "int_lib.h"
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#include <float.h>
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#include <stdio.h>
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// Returns: convert a to a double, rounding toward even.
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// Assumption: double is a IEEE 64 bit floating point type
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// di_int is a 64 bit integral type
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// seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
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COMPILER_RT_ABI double __floatdidf(di_int a);
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int test__floatdidf(di_int a, double expected)
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{
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double x = __floatdidf(a);
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if (x != expected)
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printf("error in __floatdidf(%llX) = %a, expected %a\n", a, x, expected);
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return x != expected;
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}
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char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
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char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0};
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char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
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int main()
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{
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if (test__floatdidf(0, 0.0))
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return 1;
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if (test__floatdidf(1, 1.0))
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return 1;
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if (test__floatdidf(2, 2.0))
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return 1;
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if (test__floatdidf(20, 20.0))
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return 1;
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if (test__floatdidf(-1, -1.0))
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return 1;
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if (test__floatdidf(-2, -2.0))
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return 1;
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if (test__floatdidf(-20, -20.0))
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return 1;
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if (test__floatdidf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))
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return 1;
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if (test__floatdidf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))
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return 1;
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if (test__floatdidf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))
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return 1;
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if (test__floatdidf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))
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return 1;
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if (test__floatdidf(0x8000008000000000LL, -0x1.FFFFFEp+62))
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return 1;
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if (test__floatdidf(0x8000000000000800LL, -0x1.FFFFFFFFFFFFEp+62))
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return 1;
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if (test__floatdidf(0x8000010000000000LL, -0x1.FFFFFCp+62))
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return 1;
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if (test__floatdidf(0x8000000000001000LL, -0x1.FFFFFFFFFFFFCp+62))
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return 1;
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if (test__floatdidf(0x8000000000000000LL, -0x1.000000p+63))
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return 1;
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if (test__floatdidf(0x8000000000000001LL, -0x1.000000p+63))
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return 1;
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if (test__floatdidf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
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return 1;
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if (test__floatdidf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
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return 1;
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if (test__floatdidf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
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return 1;
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if (test__floatdidf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
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return 1;
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if (test__floatdidf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
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return 1;
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if (test__floatdidf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
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return 1;
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if (test__floatdidf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
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return 1;
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if (test__floatdidf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
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return 1;
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if (test__floatdidf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
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return 1;
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if (test__floatdidf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
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return 1;
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if (test__floatdidf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
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return 1;
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if (test__floatdidf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
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return 1;
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if (test__floatdidf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496Dp+57))
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return 1;
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if (test__floatdidf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496Ep+57))
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return 1;
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if (test__floatdidf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496Ep+57))
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return 1;
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if (test__floatdidf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496Ep+57))
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return 1;
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if (test__floatdidf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496Ep+57))
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return 1;
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if (test__floatdidf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496Ep+57))
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return 1;
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if (test__floatdidf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496Ep+57))
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return 1;
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if (test__floatdidf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496Ep+57))
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return 1;
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if (test__floatdidf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496Ep+57))
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return 1;
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if (test__floatdidf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496Ep+57))
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return 1;
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if (test__floatdidf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496Fp+57))
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return 1;
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if (test__floatdidf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496Fp+57))
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return 1;
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if (test__floatdidf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496Fp+57))
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return 1;
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if (test__floatdidf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
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return 1;
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return 0;
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}
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