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clean up math_test.v

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Alexander Medvednikov 2019-12-19 22:16:03 +03:00
parent a38a0f4fb7
commit 1679457f6b
1 changed files with 27 additions and 28 deletions
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53
vlib/math/math_test.v
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@ -1,55 +1,54 @@
import math module math
fn test_gcd() { fn test_gcd() {
assert math.gcd(6, 9) == 3 assert gcd(6, 9) == 3
assert math.gcd(6, -9) == 3 assert gcd(6, -9) == 3
assert math.gcd(-6, -9) == 3 assert gcd(-6, -9) == 3
assert math.gcd(0, 0) == 0 assert gcd(0, 0) == 0
} }
fn test_lcm() { fn test_lcm() {
assert math.lcm(2, 3) == 6 assert lcm(2, 3) == 6
assert math.lcm(-2, 3) == 6 assert lcm(-2, 3) == 6
assert math.lcm(-2, -3) == 6 assert lcm(-2, -3) == 6
assert math.lcm(0, 0) == 0 assert lcm(0, 0) == 0
} }
fn test_digits() { fn test_digits() {
digits_in_10th_base := math.digits(125, 10) digits_in_10th_base := digits(125, 10)
assert digits_in_10th_base[0] == 5 assert digits_in_10th_base[0] == 5
assert digits_in_10th_base[1] == 2 assert digits_in_10th_base[1] == 2
assert digits_in_10th_base[2] == 1 assert digits_in_10th_base[2] == 1
digits_in_16th_base := math.digits(15, 16) digits_in_16th_base := digits(15, 16)
assert digits_in_16th_base[0] == 15 assert digits_in_16th_base[0] == 15
negative_digits := math.digits(-4, 2) negative_digits := digits(-4, 2)
assert negative_digits[2] == -1 assert negative_digits[2] == -1
} }
fn test_factorial() { fn test_factorial() {
assert math.factorial(12) == 479001600 assert factorial(12) == 479001600
assert math.factorial(5) == 120 assert factorial(5) == 120
assert math.factorial(0) == 1 assert factorial(0) == 1
} }
fn test_erf() { fn test_erf() {
assert math.erf(0) == 0 assert erf(0) == 0
assert math.erf(1.5) + math.erf(-1.5) == 0 assert erf(1.5) + erf(-1.5) == 0
assert math.erfc(0) == 1 assert erfc(0) == 1
assert math.erf(2.5) + math.erfc(2.5) == 1 assert erf(2.5) + erfc(2.5) == 1
assert math.erfc(3.6) + math.erfc(-3.6) == 2 assert erfc(3.6) + erfc(-3.6) == 2
} }
fn test_gamma() { fn test_gamma() {
assert math.gamma(1) == 1 assert gamma(1) == 1
assert math.gamma(5) == 24 assert gamma(5) == 24
sval := '2.453737' sval := '2.453737'
assert math.log_gamma(4.5).str() == sval assert log_gamma(4.5).str() == sval
assert math.log(math.gamma(4.5)).str() == sval assert log(gamma(4.5)).str() == sval
assert math.abs( math.log_gamma(4.5) - math.log(math.gamma(4.5)) ) < 0.000001 assert abs( log_gamma(4.5) - log(gamma(4.5)) ) < 0.000001
// assert math.log_gamma(4.5) == math.log(math.gamma(4.5)) /* <-- fails on alpine/musl // assert log_gamma(4.5) == log(gamma(4.5)) /* <-- fails on alpine/musl
} }
fn test_mod() { fn test_mod() {