1// REQUIRES-ANY: arm-target-arch,armv6m-target-arch 2// RUN: %clang_builtins %s %librt -o %t && %run %t 3//===-- aeabi_drsub.c - Test __aeabi_drsub --------------------------------===// 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 __aeabi_drsub for the compiler_rt library. 12// 13//===----------------------------------------------------------------------===// 14 15#include <stdio.h> 16#include <stdlib.h> 17#include <math.h> 18 19 20#if __arm__ 21extern __attribute__((pcs("aapcs"))) double __aeabi_drsub(double a, double b); 22 23int test__aeabi_drsub(double a, double b, double expected) 24{ 25 double actual = __aeabi_drsub(a, b); 26 if (actual != expected) 27 printf("error in __aeabi_drsub(%f, %f) = %f, expected %f\n", 28 a, b, actual, expected); 29 return actual != expected; 30} 31#endif 32 33int main() 34{ 35#if __arm__ 36 if (test__aeabi_drsub(1.0, 1.0, 0.0)) 37 return 1; 38 if (test__aeabi_drsub(1234.567, 765.4321, -469.134900)) 39 return 1; 40 if (test__aeabi_drsub(-123.0, -678.0, -555.0)) 41 return 1; 42 if (test__aeabi_drsub(0.0, -0.0, 0.0)) 43 return 1; 44#else 45 printf("skipped\n"); 46#endif 47 return 0; 48} 49