tight norm signature, add test requirement

jverzani · jverzani · commit 0748423f2b7f · 2018-06-27T17:12:21.000-04:00
diff --git a/src/Polynomials.jl b/src/Polynomials.jl
@@ -250,7 +250,7 @@ the `p`-norm is
 ||q||_p = (|q_0|^p + \\ldots + |q_n|^p)^{1/p}
 ``
 """
-norm(q::Poly, args...) = norm(coeffs(q), args...)
+norm(q::Poly, p::Real) = norm(coeffs(q), p)
 
 
 """
diff --git a/test/REQUIRE b/test/REQUIRE
@@ -0,0 +1 @@
+SpecialFunctions
diff --git a/test/runtests.jl b/test/runtests.jl
@@ -3,6 +3,7 @@ using Compat
 using Compat.Test
 using Compat.LinearAlgebra
 using Polynomials
+using SpecialFunctions
 
 import Compat.SparseArrays: sparse, speye, nnz
 
@@ -395,3 +396,9 @@ p1 = poly([1.,2.,3.])
 p2 = poly([1.,2.,6.])
 
 @test (res = roots(gcd(p1, p2)); 1. ∈ res && 2. ∈ res)
+
+## Getting error on passing Real arrays to polyfit #146
+xx = Real[20.0, 30.0, 40.0]
+yy = Real[15.7696, 21.4851, 28.2463]
+polyfit(xx,yy,2)
+
