compiler-rt/test/builtins/Unit/subsf3vfp_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_subsf3vfp
   3 //===-- subsf3vfp_test.c - Test __subsf3vfp -------------------------------===//
   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 __subsf3vfp for the compiler_rt library.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "int_lib.h"
  16 #include <stdio.h>
  17 #include <stdlib.h>
  18 #include <math.h>
  19
  20
  21 extern COMPILER_RT_ABI float __subsf3vfp(float a, float b);
  22
  23 #if __arm__ && __VFP_FP__
  24 int test__subsf3vfp(float a, float b)
  25 {
  26     float actual = __subsf3vfp(a, b);
  27     float expected = a - b;
  28     if (actual != expected)
  29         printf("error in test__subsf3vfp(%f, %f) = %f, expected %f\n",
  30                a, b, actual, expected);
  31     return actual != expected;
  32 }
  33 #endif
  34
  35 int main()
  36 {
  37 #if __arm__ && __VFP_FP__
  38     if (test__subsf3vfp(1.0, 1.0))
  39         return 1;
  40     if (test__subsf3vfp(1234.567, 765.4321))
  41         return 1;
  42     if (test__subsf3vfp(-123.0, -678.0))
  43         return 1;
  44     if (test__subsf3vfp(0.0, -0.0))
  45         return 1;
  46 #else
  47     printf("skipped\n");
  48 #endif
  49     return 0;
  50 }