compiler-rt/test/builtins/Unit/addtf3_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_addtf3
   3 //===--------------- addtf3_test.c - Test __addtf3 ------------------------===//
   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 __addtf3 for the compiler_rt library.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include <fenv.h>
  16 #include <stdio.h>
  17
  18 #if __LDBL_MANT_DIG__ == 113
  19
  20 #include "int_lib.h"
  21 #include "fp_test.h"
  22
  23 // Returns: a + b
  24 COMPILER_RT_ABI long double __addtf3(long double a, long double b);
  25
  26 int test__addtf3(long double a, long double b,
  27                  uint64_t expectedHi, uint64_t expectedLo)
  28 {
  29     long double x = __addtf3(a, b);
  30     int ret = compareResultLD(x, expectedHi, expectedLo);
  31
  32     if (ret){
  33         printf("error in test__addtf3(%.20Lf, %.20Lf) = %.20Lf, "
  34                "expected %.20Lf\n", a, b, x,
  35                fromRep128(expectedHi, expectedLo));
  36     }
  37
  38     return ret;
  39 }
  40
  41 char assumption_1[sizeof(long double) * CHAR_BIT == 128] = {0};
  42
  43 #endif
  44
  45 int main()
  46 {
  47 #if __LDBL_MANT_DIG__ == 113
  48     // qNaN + any = qNaN
  49     if (test__addtf3(makeQNaN128(),
  50                      0x1.23456789abcdefp+5L,
  51                      UINT64_C(0x7fff800000000000),
  52                      UINT64_C(0x0)))
  53         return 1;
  54     // NaN + any = NaN
  55     if (test__addtf3(makeNaN128(UINT64_C(0x800030000000)),
  56                      0x1.23456789abcdefp+5L,
  57                      UINT64_C(0x7fff800000000000),
  58                      UINT64_C(0x0)))
  59         return 1;
  60     // inf + inf = inf
  61     if (test__addtf3(makeInf128(),
  62                      makeInf128(),
  63                      UINT64_C(0x7fff000000000000),
  64                      UINT64_C(0x0)))
  65         return 1;
  66     // inf + any = inf
  67     if (test__addtf3(makeInf128(),
  68                      0x1.2335653452436234723489432abcdefp+5L,
  69                      UINT64_C(0x7fff000000000000),
  70                      UINT64_C(0x0)))
  71         return 1;
  72     // any + any
  73     if (test__addtf3(0x1.23456734245345543849abcdefp+5L,
  74                      0x1.edcba52449872455634654321fp-1L,
  75                      UINT64_C(0x40042afc95c8b579),
  76                      UINT64_C(0x61e58dd6c51eb77c)))
  77         return 1;
  78
  79 #if (defined(__arm__) || defined(__aarch64__)) && defined(__ARM_FP) || \
  80     defined(i386) || defined(__x86_64__)
  81     // Rounding mode tests on supported architectures
  82     const long double m = 1234.0L, n = 0.01L;
  83
  84     fesetround(FE_UPWARD);
  85     if (test__addtf3(m, n,
  86                      UINT64_C(0x40093480a3d70a3d),
  87                      UINT64_C(0x70a3d70a3d70a3d8)))
  88         return 1;
  89
  90     fesetround(FE_DOWNWARD);
  91     if (test__addtf3(m, n,
  92                      UINT64_C(0x40093480a3d70a3d),
  93                      UINT64_C(0x70a3d70a3d70a3d7)))
  94         return 1;
  95
  96
  97     fesetround(FE_TOWARDZERO);
  98     if (test__addtf3(m, n,
  99                      UINT64_C(0x40093480a3d70a3d),
 100                      UINT64_C(0x70a3d70a3d70a3d7)))
 101         return 1;
 102
 103     fesetround(FE_TONEAREST);
 104     if (test__addtf3(m, n,
 105                      UINT64_C(0x40093480a3d70a3d),
 106                      UINT64_C(0x70a3d70a3d70a3d7)))
 107         return 1;
 108 #endif
 109
 110 #else
 111     printf("skipped\n");
 112
 113 #endif
 114     return 0;
 115 }