compiler-rt/test/builtins/Unit/floatunditf_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_floatunditf
   3 //===-- floatunditf_test.c - Test __floatunditf ---------------------------===//
   4 //
   5 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   6 // See https://llvm.org/LICENSE.txt for license information.
   7 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   8 //
   9 //===----------------------------------------------------------------------===//
  10 //
  11 // This file tests __floatunditf for the compiler_rt library.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "int_lib.h"
  16 #include <math.h>
  17 #include <complex.h>
  18 #include <stdio.h>
  19
  20 #if __LDBL_MANT_DIG__ == 113
  21
  22 #include "fp_test.h"
  23
  24 // Returns: long integer converted to long double
  25
  26 COMPILER_RT_ABI long double __floatunditf(unsigned long long a);
  27
  28 int test__floatunditf(unsigned long long a, uint64_t expectedHi, uint64_t expectedLo)
  29 {
  30     long double x = __floatunditf(a);
  31     int ret = compareResultLD(x, expectedHi, expectedLo);
  32
  33     if (ret)
  34         printf("error in __floatunditf(%Lu) = %.20Lf, "
  35                "expected %.20Lf\n", a, x, fromRep128(expectedHi, expectedLo));
  36     return ret;
  37 }
  38
  39 char assumption_1[sizeof(long double) * CHAR_BIT == 128] = {0};
  40
  41 #endif
  42
  43 int main()
  44 {
  45 #if __LDBL_MANT_DIG__ == 113
  46     if (test__floatunditf(0xffffffffffffffffULL, UINT64_C(0x403effffffffffff), UINT64_C(0xfffe000000000000)))
  47         return 1;
  48     if (test__floatunditf(0xfffffffffffffffeULL, UINT64_C(0x403effffffffffff), UINT64_C(0xfffc000000000000)))
  49         return 1;
  50     if (test__floatunditf(0x8000000000000000ULL, UINT64_C(0x403e000000000000), UINT64_C(0x0)))
  51         return 1;
  52     if (test__floatunditf(0x7fffffffffffffffULL, UINT64_C(0x403dffffffffffff), UINT64_C(0xfffc000000000000)))
  53         return 1;
  54     if (test__floatunditf(0x123456789abcdef1ULL, UINT64_C(0x403b23456789abcd), UINT64_C(0xef10000000000000)))
  55         return 1;
  56     if (test__floatunditf(0x2ULL, UINT64_C(0x4000000000000000), UINT64_C(0x0)))
  57         return 1;
  58     if (test__floatunditf(0x1ULL, UINT64_C(0x3fff000000000000), UINT64_C(0x0)))
  59         return 1;
  60     if (test__floatunditf(0x0ULL, UINT64_C(0x0), UINT64_C(0x0)))
  61         return 1;
  62
  63 #else
  64     printf("skipped\n");
  65
  66 #endif
  67     return 0;
  68 }