Compat.LinearAlgebra (#463)

README.md

@@ -110,6 +110,9 @@ Currently, the `@compat` macro supports the following syntaxes:
 * `using Compat.SparseArrays` is provided on versions older than 0.7, where this library is
   not yet part of the standard library ([#25249]).
 
+* `using Compat.LinearAlgebra` is provided on versions older than 0.7, where this library is
+  not yet part of the standard library ([#25571]).
+
 * `using Compat.Random` is provided on versions older than 0.7, where this library is
   not yet part of the standard library ([#24874]).
 

src/Compat.jl

@@ -796,6 +796,12 @@ else
     import IterativeEigensolvers
 end
 
+@static if VERSION < v"0.7.0-DEV.3449"
+    const LinearAlgebra = Base.LinAlg
+else
+    import LinearAlgebra
+end
+
 if VERSION < v"0.7.0-DEV.3389"
     const SparseArrays = Base.SparseArrays
 else

src/deprecated.jl

@@ -175,7 +175,7 @@ end
     Base.@deprecate_binding AsyncCondition Base.AsyncCondition
     Base.@deprecate_binding promote_eltype_op Base.promote_eltype_op
     @eval Base.@deprecate_binding $(Symbol("@irrational")) Base.$(Symbol("@irrational"))
-    @eval Base.@deprecate_binding $(Symbol("@blasfunc")) Base.LinAlg.BLAS.$(Symbol("@blasfunc"))
+    @eval Base.@deprecate_binding $(Symbol("@blasfunc")) Compat.LinearAlgebra.BLAS.$(Symbol("@blasfunc"))
 else
     const KERNEL = Sys.KERNEL
     const UTF8String = Core.String

test/runtests.jl

@@ -1,5 +1,6 @@
 using Compat
 using Compat.Test
+using Compat.LinearAlgebra
 using Compat.SparseArrays
 
 @test isempty(detect_ambiguities(Base, Core, Compat))
@@ -712,7 +713,7 @@ end
 for T in (Float64, ComplexF32, BigFloat, Int)
     λ = T(4)
     @test chol(λ*I).λ ≈ √λ
-    @test_throws Union{ArgumentError,LinAlg.PosDefException} chol(-λ*I)
+    @test_throws Union{ArgumentError,Compat.LinearAlgebra.PosDefException} chol(-λ*I)
 end
 
 let
@@ -1091,6 +1092,11 @@ using Compat.Random
 # 0.7
 @test contains("Hello, World!", r"World")
 
+# 0.7.0-DEV.3449
+let A = [2.0 1.0; 1.0 3.0], b = [1.0, 2.0], x = [0.2, 0.6]
+    @test cholfact(A) \ b ≈ x
+end
+
 # 0.7.0-DEV.3173
 @test invpermute!(permute!([1, 2], 2:-1:1), 2:-1:1) == [1, 2]