From 2d5751b224c8c2ea2f79231392dbb554637d8b64 Mon Sep 17 00:00:00 2001
From: Waldir Pimenta <waldyrious@gmail.com>
Date: Sat, 1 Aug 2015 04:27:35 +0100
Subject: [PATCH] MathConst was renamed Irrational (JuliaLang/julia#11922)

---
 README.md        | 2 +-
 src/Tau.jl       | 2 +-
 test/runtests.jl | 3 +--
 3 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index ae824e7..fa0c86a 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ tau == 2*pi
 using Tau
 
 tau == τ == 2*pi  # => true
-typeof(tau)       # => MathConst{:τ} (constructor with 1 method)
+typeof(tau)       # => Irrational{:τ} (constructor with 1 method)
 ```
 
 The tau variants of `sinpi`, `cospi`, and `mod2pi` are also defined:
diff --git a/src/Tau.jl b/src/Tau.jl
index 774d77b..11cfa60 100644
--- a/src/Tau.jl
+++ b/src/Tau.jl
@@ -4,7 +4,7 @@ export tau, τ,
        sinτ, cosτ, modτ
 
 # Use overridden macro definition to define conversion methods for tau
-Base.@math_const τ        6.28318530717958647692  (2*big(pi))
+Base.@irrational τ 6.28318530717958647692 (2*big(pi))
 const tau = τ
 
 include("trig.jl")
diff --git a/test/runtests.jl b/test/runtests.jl
index e96b098..ca6b1bb 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -5,7 +5,7 @@ using Base.Test
 @test float32(tau) == 2*float32(pi)
 @test float64(float32(tau)) == float64(2*float32(pi))
 @test big(tau) == 2(big(pi))
-@test isa(tau, MathConst)
+@test isa(tau, Irrational)
 
 # degree-based trig functions
 for T = (Float32,Float64)
@@ -36,4 +36,3 @@ end
 @test_approx_eq modtau(355.0)       3.1416227979431572
 @test_approx_eq modtau(355.0f0)     3.1416228f0
 @test modtau(int64(2)^60) == modtau(2.0 ^ 60)
-