src/compiler-rt/test/builtins/Unit/arm/aeabi_drsub_test.c

   1 //===-- aeabi_drsub.c - Test __aeabi_drsub --------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is dual licensed under the MIT and the University of Illinois Open
   6 // Source Licenses. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file tests __aeabi_drsub for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16 #include <math.h>
  17
  18
  19 #if __arm__
  20 extern __attribute__((pcs("aapcs"))) double __aeabi_drsub(double a, double b);
  21
  22 int test__aeabi_drsub(double a, double b, double expected)
  23 {
  24     double actual = __aeabi_drsub(a, b);
  25     if (actual != expected)
  26         printf("error in __aeabi_drsub(%f, %f) = %f, expected %f\n",
  27                a, b, actual, expected);
  28     return actual != expected;
  29 }
  30 #endif
  31
  32 int main()
  33 {
  34 #if __arm__
  35     if (test__aeabi_drsub(1.0, 1.0, 0.0))
  36         return 1;
  37     if (test__aeabi_drsub(1234.567, 765.4321, -469.134900))
  38         return 1;
  39     if (test__aeabi_drsub(-123.0, -678.0, -555.0))
  40         return 1;
  41     if (test__aeabi_drsub(0.0, -0.0, 0.0))
  42         return 1;
  43 #else
  44     printf("skipped\n");
  45 #endif
  46     return 0;
  47 }