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llvm-project/compiler-rt/test/builtins/Unit/floatuntitf_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_floatuntitf
//===-- floatuntitf.c - Test __floatuntitf --------------------------------===//
//
// 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 __floatuntitf for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#define QUAD_PRECISION
#include "fp_lib.h"
#include "int_lib.h"
#include <float.h>
#include <stdio.h>
#if defined(CRT_HAS_128BIT) && defined(CRT_LDBL_128BIT)
/* Returns: convert a tu_int to a fp_t, rounding toward even. */
/* Assumption: fp_t is a IEEE 128 bit floating point type
* tu_int is a 128 bit integral type
*/
/* seee eeee eeee eeee mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm |
* mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
*/
COMPILER_RT_ABI fp_t __floatuntitf(tu_int a);
int test__floatuntitf(tu_int a, fp_t expected) {
fp_t x = __floatuntitf(a);
if (x != expected) {
utwords at;
at.all = a;
printf("error in __floatuntitf(0x%.16llX%.16llX) = %LA, expected %LA\n",
at.s.high, at.s.low, x, expected);
}
return x != expected;
}
char assumption_1[sizeof(tu_int) == 2*sizeof(du_int)] = {0};
char assumption_2[sizeof(tu_int)*CHAR_BIT == 128] = {0};
char assumption_3[sizeof(fp_t)*CHAR_BIT == 128] = {0};
#endif
int main() {
#if defined(CRT_HAS_128BIT) && defined(CRT_LDBL_128BIT)
if (test__floatuntitf(0, 0.0))
return 1;
if (test__floatuntitf(1, 1.0))
return 1;
if (test__floatuntitf(2, 2.0))
return 1;
if (test__floatuntitf(20, 20.0))
return 1;
if (test__floatuntitf(0x7FFFFF8000000000ULL, 0x1.FFFFFEp+62))
return 1;
if (test__floatuntitf(0x7FFFFFFFFFFFF800ULL, 0x1.FFFFFFFFFFFFEp+62))
return 1;
if (test__floatuntitf(0x7FFFFF0000000000ULL, 0x1.FFFFFCp+62))
return 1;
if (test__floatuntitf(0x7FFFFFFFFFFFF000ULL, 0x1.FFFFFFFFFFFFCp+62))
return 1;
if (test__floatuntitf(0x7FFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFEp+59L))
return 1;
if (test__floatuntitf(0xFFFFFFFFFFFFFFFEULL, 0xF.FFFFFFFFFFFFFFEp+60L))
return 1;
if (test__floatuntitf(0xFFFFFFFFFFFFFFFFULL, 0xF.FFFFFFFFFFFFFFFp+60L))
return 1;
if (test__floatuntitf(0x8000008000000000ULL, 0x8.000008p+60))
return 1;
if (test__floatuntitf(0x8000000000000800ULL, 0x8.0000000000008p+60))
return 1;
if (test__floatuntitf(0x8000010000000000ULL, 0x8.00001p+60))
return 1;
if (test__floatuntitf(0x8000000000001000ULL, 0x8.000000000001p+60))
return 1;
if (test__floatuntitf(0x8000000000000000ULL, 0x8p+60))
return 1;
if (test__floatuntitf(0x8000000000000001ULL, 0x8.000000000000001p+60L))
return 1;
if (test__floatuntitf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50))
return 1;
if (test__floatuntitf(0x0007FB72EA000000LL, 0x1.FEDCBA8p+50))
return 1;
if (test__floatuntitf(0x0007FB72EB000000LL, 0x1.FEDCBACp+50))
return 1;
if (test__floatuntitf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAFFFFFFCp+50))
return 1;
if (test__floatuntitf(0x0007FB72EC000000LL, 0x1.FEDCBBp+50))
return 1;
if (test__floatuntitf(0x0007FB72E8000001LL, 0x1.FEDCBA0000004p+50))
return 1;
if (test__floatuntitf(0x0007FB72E6000000LL, 0x1.FEDCB98p+50))
return 1;
if (test__floatuntitf(0x0007FB72E7000000LL, 0x1.FEDCB9Cp+50))
return 1;
if (test__floatuntitf(0x0007FB72E7FFFFFFLL, 0x1.FEDCB9FFFFFFCp+50))
return 1;
if (test__floatuntitf(0x0007FB72E4000001LL, 0x1.FEDCB90000004p+50))
return 1;
if (test__floatuntitf(0x0007FB72E4000000LL, 0x1.FEDCB9p+50))
return 1;
if (test__floatuntitf(0x023479FD0E092DC0LL, 0x1.1A3CFE870496Ep+57))
return 1;
if (test__floatuntitf(0x023479FD0E092DA1LL, 0x1.1A3CFE870496D08p+57L))
return 1;
if (test__floatuntitf(0x023479FD0E092DB0LL, 0x1.1A3CFE870496D8p+57L))
return 1;
if (test__floatuntitf(0x023479FD0E092DB8LL, 0x1.1A3CFE870496DCp+57L))
return 1;
if (test__floatuntitf(0x023479FD0E092DB6LL, 0x1.1A3CFE870496DBp+57L))
return 1;
if (test__floatuntitf(0x023479FD0E092DBFLL, 0x1.1A3CFE870496DF8p+57L))
return 1;
if (test__floatuntitf(0x023479FD0E092DC1LL, 0x1.1A3CFE870496E08p+57L))
return 1;
if (test__floatuntitf(0x023479FD0E092DC7LL, 0x1.1A3CFE870496E38p+57L))
return 1;
if (test__floatuntitf(0x023479FD0E092DC8LL, 0x1.1A3CFE870496E4p+57L))
return 1;
if (test__floatuntitf(0x023479FD0E092DCFLL, 0x1.1A3CFE870496E78p+57L))
return 1;
if (test__floatuntitf(0x023479FD0E092DD0LL, 0x1.1A3CFE870496E8p+57L))
return 1;
if (test__floatuntitf(0x023479FD0E092DD1LL, 0x1.1A3CFE870496E88p+57L))
return 1;
if (test__floatuntitf(0x023479FD0E092DD8LL, 0x1.1A3CFE870496ECp+57L))
return 1;
if (test__floatuntitf(0x023479FD0E092DDFLL, 0x1.1A3CFE870496EF8p+57L))
return 1;
if (test__floatuntitf(0x023479FD0E092DE0LL, 0x1.1A3CFE870496Fp+57))
return 1;
if (test__floatuntitf(make_ti(0x023479FD0E092DC0LL, 0), 0x1.1A3CFE870496Ep+121L))
return 1;
if (test__floatuntitf(make_ti(0x023479FD0E092DA1LL, 1), 0x1.1A3CFE870496D08p+121L))
return 1;
if (test__floatuntitf(make_ti(0x023479FD0E092DB0LL, 2), 0x1.1A3CFE870496D8p+121L))
return 1;
if (test__floatuntitf(make_ti(0x023479FD0E092DB8LL, 3), 0x1.1A3CFE870496DCp+121L))
return 1;
if (test__floatuntitf(make_ti(0x023479FD0E092DB6LL, 4), 0x1.1A3CFE870496DBp+121L))
return 1;
if (test__floatuntitf(make_ti(0x023479FD0E092DBFLL, 5), 0x1.1A3CFE870496DF8p+121L))
return 1;
if (test__floatuntitf(make_ti(0x023479FD0E092DC1LL, 6), 0x1.1A3CFE870496E08p+121L))
return 1;
if (test__floatuntitf(make_ti(0x023479FD0E092DC7LL, 7), 0x1.1A3CFE870496E38p+121L))
return 1;
if (test__floatuntitf(make_ti(0x023479FD0E092DC8LL, 8), 0x1.1A3CFE870496E4p+121L))
return 1;
if (test__floatuntitf(make_ti(0x023479FD0E092DCFLL, 9), 0x1.1A3CFE870496E78p+121L))
return 1;
if (test__floatuntitf(make_ti(0x023479FD0E092DD0LL, 0), 0x1.1A3CFE870496E8p+121L))
return 1;
if (test__floatuntitf(make_ti(0x023479FD0E092DD1LL, 11), 0x1.1A3CFE870496E88p+121L))
return 1;
if (test__floatuntitf(make_ti(0x023479FD0E092DD8LL, 12), 0x1.1A3CFE870496ECp+121L))
return 1;
if (test__floatuntitf(make_ti(0x023479FD0E092DDFLL, 13), 0x1.1A3CFE870496EF8p+121L))
return 1;
if (test__floatuntitf(make_ti(0x023479FD0E092DE0LL, 14), 0x1.1A3CFE870496Fp+121L))
return 1;
if (test__floatuntitf(make_ti(0, 0xFFFFFFFFFFFFFFFFLL), 0x1.FFFFFFFFFFFFFFFEp+63L))
return 1;
if (test__floatuntitf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x0000000000000000LL),
0x1.FFFFFFFFFFFFFFFEp+127L))
return 1;
if (test__floatuntitf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL),
0x1.0000000000000000p+128L))
return 1;
if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC2801LL),
0x1.23456789ABCDEF0123456789ABC3p+124L))
return 1;
if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC3000LL),
0x1.23456789ABCDEF0123456789ABC3p+124L))
return 1;
if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC37FFLL),
0x1.23456789ABCDEF0123456789ABC3p+124L))
return 1;
if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC3800LL),
0x1.23456789ABCDEF0123456789ABC4p+124L))
return 1;
if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC4000LL),
0x1.23456789ABCDEF0123456789ABC4p+124L))
return 1;
if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC47FFLL),
0x1.23456789ABCDEF0123456789ABC4p+124L))
return 1;
if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC4800LL),
0x1.23456789ABCDEF0123456789ABC4p+124L))
return 1;
if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC4801LL),
0x1.23456789ABCDEF0123456789ABC5p+124L))
return 1;
if (test__floatuntitf(make_ti(0x123456789ABCDEF0LL, 0x123456789ABC57FFLL),
0x1.23456789ABCDEF0123456789ABC5p+124L))
return 1;
#else
printf("skipped\n");
#endif
return 0;
}
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