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add hyperbolic functions #47

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merged 3 commits into from
Apr 25, 2024
Merged

add hyperbolic functions #47

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1616c48
add hyperbolic functions
aplavin Apr 24, 2024
371ec13
fix tests on 1.0
aplavin Apr 25, 2024
bac50cc
bump version
aplavin Apr 25, 2024
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12 changes: 12 additions & 0 deletions src/inverse.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -143,6 +143,18 @@ inverse(::typeof(log10)) = exp10
inverse(::typeof(expm1)) = log1p
inverse(::typeof(log1p)) = expm1


inverse(::typeof(sinh)) = asinh
inverse(::typeof(tanh)) = atanh
inverse(::typeof(coth)) = acoth
inverse(::typeof(csch)) = acsch

inverse(::typeof(asinh)) = sinh
inverse(::typeof(atanh)) = tanh
inverse(::typeof(acoth)) = coth
inverse(::typeof(acsch)) = csch


inverse(::typeof(sqrt)) = square
inverse(::typeof(square)) = sqrt

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5 changes: 5 additions & 0 deletions test/test_inverse.jl
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Expand Up @@ -54,13 +54,18 @@ end
end
for f in (
+, -, exp, exp2, exp10, expm1, cbrt, deg2rad, rad2deg, conj,
sinh, tanh, coth, csch, asinh, atanh, acsch, # all invertible hyperbolic functions aside from acoth
Base.Fix1(+, rand()), Base.Fix2(+, rand()), Base.Fix1(-, rand()), Base.Fix2(-, rand()),
Base.Fix1(*, rand()), Base.Fix2(*, rand()), Base.Fix1(/, rand()), Base.Fix2(/, rand()), Base.Fix1(\, rand()), Base.Fix2(\, rand()),
Base.Fix2(^, rand(-11:2:11)),
)
InverseFunctions.test_inverse(f, x)
InverseFunctions.test_inverse(f, -x)
end
# acoth only defined for |x| > 1
InverseFunctions.test_inverse(acoth, 1 + x)
InverseFunctions.test_inverse(acoth, -1 - x)

InverseFunctions.test_inverse(conj, 2 - 3im)
InverseFunctions.test_inverse(reverse, [10, 20, 30])

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