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clang-p2996/compiler-rt/test/builtins/Unit/floatuntidf_test.c
Dan Liew 5be7eb3ab4 [Builtins] Provide a mechanism to selectively disable tests based on whether an implementation is provided by a builtin library. 
Summary:
If a platform removes some builtin implementations (e.g. via the
Darwin-excludes mechanism) then this can lead to test failures because
the test expects an implementation to be available.

To solve this lit features are added for each configuration based
on which sources are included in the builtin library. The features
are of the form `librt_has_<name>` where `<name>` is the name of the
source file with the file extension removed. This handles C and
assembly sources.

With the lit features in place it is possible to make certain tests
require them.

Example:

```
REQUIRES: librt_has_comparedf2
```

All top-level tests in `test/builtins/Unit` (i.e. not under
`arm`, `ppc`, and `riscv`) have been annotated with the appropriate
`REQUIRES: librt_has_*` statement.

rdar://problem/55520987

Reviewers: beanz, steven_wu, arphaman, dexonsmith, phosek, thakis

Subscribers: mgorny, #sanitizers, llvm-commits

Tags: #llvm, #sanitizers

Differential Revision: https://reviews.llvm.org/D68064

llvm-svn: 375150
2019-10-17 18:12:49 +00:00

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// RUN: %clang_builtins %s %librt -o %t && %run %t
// REQUIRES: librt_has_floatuntidf
// REQUIRES: int128
//===-- floatuntidf.c - Test __floatuntidf --------------------------------===//
//
// 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 __floatuntidf for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#include "int_lib.h"
#include <float.h>
#include <stdio.h>
#ifdef CRT_HAS_128BIT
// Returns: convert a to a double, rounding toward even.
// Assumption: double is a IEEE 64 bit floating point type
// tu_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 __floatuntidf(tu_int a);
int test__floatuntidf(tu_int a, double expected)
{
double x = __floatuntidf(a);
if (x != expected)
{
utwords at;
at.all = a;
printf("error in __floatuntidf(0x%.16llX%.16llX) = %a, expected %a\n",
at.s.high, at.s.low, x, expected);
}
return x != expected;
}
char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
char assumption_2[sizeof(ti_int)*CHAR_BIT == 128] = {0};
char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
#endif
int main()
{
#ifdef CRT_HAS_128BIT
if (test__floatuntidf(0, 0.0))
return 1;
if (test__floatuntidf(1, 1.0))
return 1;
if (test__floatuntidf(2, 2.0))
return 1;
if (test__floatuntidf(20, 20.0))
return 1;
if (test__floatuntidf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62))
return 1;
if (test__floatuntidf(0x7FFFFFFFFFFFF800LL, 0x1.FFFFFFFFFFFFEp+62))
return 1;
if (test__floatuntidf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62))
return 1;
if (test__floatuntidf(0x7FFFFFFFFFFFF000LL, 0x1.FFFFFFFFFFFFCp+62))
return 1;
if (test__floatuntidf(make_ti(0x8000008000000000LL, 0), 0x1.000001p+127))
return 1;
if (test__floatuntidf(make_ti(0x8000000000000800LL, 0), 0x1.0000000000001p+127))
return 1;
if (test__floatuntidf(make_ti(0x8000010000000000LL, 0), 0x1.000002p+127))
return 1;
if (test__floatuntidf(make_ti(0x8000000000001000LL, 0), 0x1.0000000000002p+127))
return 1;
if (test__floatuntidf(make_ti(0x8000000000000000LL, 0), 0x1.000000p+127))
return 1;
if (test__floatuntidf(make_ti(0x8000000000000001LL, 0), 0x1.0000000000000002p+127))
return 1;
if (test__floatuntidf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
return 1;
if (test__floatuntidf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
return 1;
if (test__floatuntidf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
return 1;
if (test__floatuntidf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
return 1;
if (test__floatuntidf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
return 1;
if (test__floatuntidf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
return 1;
if (test__floatuntidf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
return 1;
if (test__floatuntidf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
return 1;
if (test__floatuntidf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
return 1;
if (test__floatuntidf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
return 1;
if (test__floatuntidf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
return 1;
if (test__floatuntidf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
return 1;
if (test__floatuntidf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496Dp+57))
return 1;
if (test__floatuntidf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496Ep+57))
return 1;
if (test__floatuntidf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496Ep+57))
return 1;
if (test__floatuntidf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496Ep+57))
return 1;
if (test__floatuntidf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496Ep+57))
return 1;
if (test__floatuntidf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496Ep+57))
return 1;
if (test__floatuntidf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496Ep+57))
return 1;
if (test__floatuntidf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496Ep+57))
return 1;
if (test__floatuntidf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496Ep+57))
return 1;
if (test__floatuntidf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496Ep+57))
return 1;
if (test__floatuntidf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496Fp+57))
return 1;
if (test__floatuntidf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496Fp+57))
return 1;
if (test__floatuntidf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496Fp+57))
return 1;
if (test__floatuntidf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
return 1;
if (test__floatuntidf(make_ti(0x023479FD0E092DC0LL, 0), 0x1.1A3CFE870496Ep+121))
return 1;
if (test__floatuntidf(make_ti(0x023479FD0E092DA1LL, 1), 0x1.1A3CFE870496Dp+121))
return 1;
if (test__floatuntidf(make_ti(0x023479FD0E092DB0LL, 2), 0x1.1A3CFE870496Ep+121))
return 1;
if (test__floatuntidf(make_ti(0x023479FD0E092DB8LL, 3), 0x1.1A3CFE870496Ep+121))
return 1;
if (test__floatuntidf(make_ti(0x023479FD0E092DB6LL, 4), 0x1.1A3CFE870496Ep+121))
return 1;
if (test__floatuntidf(make_ti(0x023479FD0E092DBFLL, 5), 0x1.1A3CFE870496Ep+121))
return 1;
if (test__floatuntidf(make_ti(0x023479FD0E092DC1LL, 6), 0x1.1A3CFE870496Ep+121))
return 1;
if (test__floatuntidf(make_ti(0x023479FD0E092DC7LL, 7), 0x1.1A3CFE870496Ep+121))
return 1;
if (test__floatuntidf(make_ti(0x023479FD0E092DC8LL, 8), 0x1.1A3CFE870496Ep+121))
return 1;
if (test__floatuntidf(make_ti(0x023479FD0E092DCFLL, 9), 0x1.1A3CFE870496Ep+121))
return 1;
if (test__floatuntidf(make_ti(0x023479FD0E092DD0LL, 0), 0x1.1A3CFE870496Ep+121))
return 1;
if (test__floatuntidf(make_ti(0x023479FD0E092DD1LL, 11), 0x1.1A3CFE870496Fp+121))
return 1;
if (test__floatuntidf(make_ti(0x023479FD0E092DD8LL, 12), 0x1.1A3CFE870496Fp+121))
return 1;
if (test__floatuntidf(make_ti(0x023479FD0E092DDFLL, 13), 0x1.1A3CFE870496Fp+121))
return 1;
if (test__floatuntidf(make_ti(0x023479FD0E092DE0LL, 14), 0x1.1A3CFE870496Fp+121))
return 1;
#else
printf("skipped\n");
#endif
return 0;
}
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