restore SpecialFunctions

Author: dlfivefifty

src/ApproxFunOrthogonalPolynomials.jl

@@ -78,6 +78,20 @@ import FastTransforms: ChebyshevTransformPlan, IChebyshevTransformPlan, plan_che
 
 import BlockBandedMatrices: blockbandwidths, subblockbandwidths
 
+# we need to import all special functions to use Calculus.symbolic_derivatives_1arg
+# we can't do importall Base as we replace some Base definitions
+import SpecialFunctions: sinpi, cospi, airy, besselh,
+                    asinh, acosh,atanh, erfcx, dawson, erf, erfi,
+                    sin, cos, sinh, cosh, airyai, airybi, airyaiprime, airybiprime,
+                    hankelh1, hankelh2, besselj, besselj0, bessely, besseli, besselk,
+                    besselkx, hankelh1x, hankelh2x, exp2, exp10, log2, log10,
+                    tan, tanh, csc, asin, acsc, sec, acos, asec,
+                    cot, atan, acot, sinh, csch, asinh, acsch,
+                    sech, acosh, asech, tanh, coth, atanh, acoth,
+                    expm1, log1p, lfact, sinc, cosc, erfinv, erfcinv, beta, lbeta,
+                    eta, zeta, gamma, polygamma, invdigamma, digamma, trigamma,
+                    abs, sign, log, expm1, tan, abs2, sqrt, angle, max, min, cbrt, log,
+                    atan, acos, asin, erfc, inv
 
 include("ultraspherical.jl")
 include("Domains/Domains.jl")