From d71d2fffa2ddd5516148a0bbb4484bd694ba5e11 Mon Sep 17 00:00:00 2001
From: Sebastian Stock <42280794+sostock@users.noreply.github.com>
Date: Sun, 30 Jul 2023 13:36:25 +0200
Subject: [PATCH] Add support for `tanpi` function (#620)

---
 src/quantities.jl | 2 +-
 test/runtests.jl  | 7 ++++++-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/quantities.jl b/src/quantities.jl
index 96469b21..6d47729a 100644
--- a/src/quantities.jl
+++ b/src/quantities.jl
@@ -206,7 +206,7 @@ sqrt(x::AbstractQuantity) = Quantity(sqrt(x.val), sqrt(unit(x)))
 cbrt(x::AbstractQuantity) = Quantity(cbrt(x.val), cbrt(unit(x)))
 
 for _y in (:sin, :cos, :tan, :asin, :acos, :atan, :sinh, :cosh, :tanh, :asinh, :acosh, :atanh,
-           :sinpi, :cospi, :sinc, :cosc, :cis, :cispi, :sincospi)
+           :sinpi, :cospi, :tanpi, :sinc, :cosc, :cis, :cispi, :sincospi)
     if isdefined(Base, _y)
         @eval Base.$(_y)(x::DimensionlessQuantity) = Base.$(_y)(uconvert(NoUnits, x))
     end
diff --git a/test/runtests.jl b/test/runtests.jl
index 75a54750..38d4c7e6 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -9,7 +9,7 @@ import Unitful:
     ac,
     mg, g, kg,
     Ra, °F, °C, K,
-    rad, °,
+    rad, mrad, °,
     ms, s, minute, hr, d, yr, Hz,
     J, A, N, mol, V,
     mW, W,
@@ -751,6 +751,11 @@ Base.:(<=)(x::Issue399, y::Issue399) = x.num <= y.num
         if isdefined(Base, :sincospi)
             @test @inferred(sincospi(rad/2)) === (1.0, 0.0)
         end
+        if isdefined(Base, :tanpi)
+            @test @inferred(tanpi(1f0rad)) === tanpi(1f0)
+            @test @inferred(tanpi(250mrad)) === tanpi(0.25)
+            @test @inferred(tanpi(-100mm/m)) === tanpi(-1//10)
+        end
 
         @test @inferred(atan(m*sqrt(3),1m)) ≈ 60°
         @test @inferred(atan(m*sqrt(3),1.0m)) ≈ 60°