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LibM: Implement various functions.

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This commit is contained in:
Andreas Kling 2019-10-17 09:32:24 +02:00
parent e51c1aa3d4
commit c13be2c7ea
3 changed files with 147 additions and 53 deletions
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31
Libraries/LibM/TestMath.cpp
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@ -14,6 +14,24 @@ TEST_CASE(trig)
EXPECT_CLOSE(cos(-1), 0.594715);
EXPECT_CLOSE(tan(-1), -1.459446);
EXPECT(isnan(sqrt(-1)));
EXPECT(isnan(asin(1.1)));
EXPECT(isnan(asin(-1.1)));
EXPECT_CLOSE(asin(0), 0.0);
EXPECT_CLOSE(asin(0.01), 0.01);
EXPECT_CLOSE(asin(0.1), 0.100167);
EXPECT_CLOSE(asin(0.3), 0.304693);
EXPECT_CLOSE(asin(0.499), 0.522444);
EXPECT_CLOSE(asin(0.5), 0.523599);
EXPECT_CLOSE(asin(0.501), 0.524754);
EXPECT_CLOSE(asin(0.9), 1.119770);
EXPECT_CLOSE(asin(0.99), 1.429246);
EXPECT_CLOSE(asin(1.0), 1.570750);
EXPECT_CLOSE(atan(0), 0.0)
EXPECT_CLOSE(atan(0.5), 0.463648)
EXPECT_CLOSE(atan(-0.5), -0.463648)
EXPECT_CLOSE(atan(5.5), 1.390943)
EXPECT_CLOSE(atan(-5.5), -1.390943)
EXPECT_CLOSE(atan(555.5), 1.568996)
}
TEST_CASE(other)
@ -51,4 +69,17 @@ TEST_CASE(exponents)
EXPECT_EQ(exp(1000), std::numeric_limits<double>::infinity());
}
TEST_CASE(logarithms)
{
EXPECT(isnan(log(-1)));
EXPECT(log(0) < -1000000);
EXPECT_CLOSE(log(0.5), -0.693233)
EXPECT_CLOSE(log(1.1), 0.095310)
EXPECT_CLOSE(log(5), 1.609480)
EXPECT_CLOSE(log(5.5), 1.704842)
EXPECT_CLOSE(log(500), 6.214104)
EXPECT_CLOSE(log2(5), 2.321989)
EXPECT_CLOSE(log10(5), 0.698988)
}
TEST_MAIN(Math)