libc/test/src/math/pow_test.cpp

   1 //===-- Unittests for pow -------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "src/math/pow.h"
  10 #include "test/UnitTest/FPMatcher.h"
  11 #include "test/UnitTest/Test.h"
  12 #include "utils/MPFRWrapper/MPFRUtils.h"
  13 #include <math.h>
  14
  15 #include <errno.h>
  16 #include <stdint.h>
  17
  18 using FPBits = __llvm_libc::fputil::FPBits<double>;
  19
  20 namespace mpfr = __llvm_libc::testing::mpfr;
  21
  22 DECLARE_SPECIAL_CONSTANTS(double)
  23
  24 TEST(LlvmLibcAsinTest, SpecialNumbers) {
  25   errno = 0;
  26
  27   EXPECT_FP_EQ(aNaN, __llvm_libc::pow(aNaN, aNaN));
  28   EXPECT_MATH_ERRNO(0);
  29
  30   EXPECT_FP_EQ(1.0, __llvm_libc::pow(1.0, 1.0));
  31   EXPECT_MATH_ERRNO(0);
  32
  33   EXPECT_FP_EQ(1.0, __llvm_libc::pow(1.0, 2.0));
  34   EXPECT_MATH_ERRNO(0);
  35
  36   EXPECT_FP_EQ(inf, __llvm_libc::pow(2.0, inf));
  37 }