compiler-rt/test/builtins/Unit/truncdfsf2_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_truncdfsf2
   3
   4 //===--------------- truncdfsf2_test.c - Test __truncdfsf2 ----------------===//
   5 //
   6 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   7 // See https://llvm.org/LICENSE.txt for license information.
   8 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   9 //
  10 //===----------------------------------------------------------------------===//
  11 //
  12 // This file tests __truncdfsf2 for the compiler_rt library.
  13 //
  14 //===----------------------------------------------------------------------===//
  15
  16 #include <stdio.h>
  17
  18 #include "fp_test.h"
  19
  20 float __truncdfsf2(double a);
  21
  22 int test__truncdfsf2(double a)
  23 {
  24     float actual = __truncdfsf2(a);
  25     float expected = a;
  26
  27     if (actual != expected) {
  28         printf("error in test__truncdfsf2(%lf) = %f, "
  29                "expected %f\n", a, actual, expected);
  30         return 1;
  31     }
  32     return 0;
  33 }
  34
  35 int main()
  36 {
  37     if (test__truncdfsf2(340282366920938463463374607431768211456.0))
  38         return 1;
  39     return 0;
  40 }