libc/test/src/math/asinhf_test.cpp

   1 //===-- Unittests for asinhf ----------------------------------------------===//
   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/__support/FPUtil/FPBits.h"
  10 #include "src/math/asinhf.h"
  11 #include "test/UnitTest/FPMatcher.h"
  12 #include "test/UnitTest/Test.h"
  13 #include "utils/MPFRWrapper/MPFRUtils.h"
  14 #include <math.h>
  15
  16 #include <errno.h>
  17 #include <stdint.h>
  18
  19 using FPBits_t = __llvm_libc::fputil::FPBits<float>;
  20
  21 namespace mpfr = __llvm_libc::testing::mpfr;
  22
  23 DECLARE_SPECIAL_CONSTANTS(float)
  24
  25 TEST(LlvmLibcAsinhfTest, SpecialNumbers) {
  26   errno = 0;
  27
  28   EXPECT_FP_EQ(aNaN, __llvm_libc::asinhf(aNaN));
  29   EXPECT_MATH_ERRNO(0);
  30
  31   EXPECT_FP_EQ(0.0f, __llvm_libc::asinhf(0.0f));
  32   EXPECT_MATH_ERRNO(0);
  33
  34   EXPECT_FP_EQ(-0.0f, __llvm_libc::asinhf(-0.0f));
  35   EXPECT_MATH_ERRNO(0);
  36
  37   EXPECT_FP_EQ(inf, __llvm_libc::asinhf(inf));
  38   EXPECT_MATH_ERRNO(0);
  39
  40   EXPECT_FP_EQ(neg_inf, __llvm_libc::asinhf(neg_inf));
  41   EXPECT_MATH_ERRNO(0);
  42 }
  43
  44 TEST(LlvmLibcAsinhfTest, InFloatRange) {
  45   constexpr uint32_t COUNT = 1000000;
  46   constexpr uint32_t STEP = UINT32_MAX / COUNT;
  47   for (uint32_t i = 0, v = 0; i <= COUNT; ++i, v += STEP) {
  48     float x = float(FPBits_t(v));
  49     if (isnan(x) || isinf(x))
  50       continue;
  51     ASSERT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Asinh, x,
  52                                    __llvm_libc::asinhf(x), 0.5);
  53     ASSERT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Asinh, -x,
  54                                    __llvm_libc::asinhf(-x), 0.5);
  55   }
  56 }
  57
  58 TEST(LlvmLibcAsinhfTest, SpecificBitPatterns) {
  59   constexpr int N = 11;
  60   constexpr uint32_t INPUTS[N] = {
  61       0x45abaf26, // |x| = 0x1.575e4cp12f
  62       0x49d29048, // |x| = 0x1.a5209p20f
  63       0x4bdd65a5, // |x| = 0x1.bacb4ap24f
  64       0x4c803f2c, // |x| = 0x1.007e58p26f
  65       0x4f8ffb03, // |x| = 0x1.1ff606p32f
  66       0x5c569e88, // |x| = 0x1.ad3d1p57f
  67       0x5e68984e, // |x| = 0x1.d1309cp61f
  68       0x655890d3, // |x| = 0x1.b121a6p75f
  69       0x65de7ca6, // |x| = 0x1.bcf94cp76f
  70       0x6eb1a8ec, // |x| = 0x1.6351d8p94f
  71       0x7997f30a, // |x| = 0x1.2fe614p116f
  72   };
  73
  74   for (int i = 0; i < N; ++i) {
  75     float x = float(FPBits_t(INPUTS[i]));
  76     EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Asinh, x,
  77                                    __llvm_libc::asinhf(x), 0.5);
  78     EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Asinh, -x,
  79                                    __llvm_libc::asinhf(-x), 0.5);
  80   }
  81 }