LinearAlgebra: delete _rand_pm1! in favor of rand!

Author: rfourquet

stdlib/SparseArrays/src/linalg.jl

@@ -1,6 +1,7 @@
 # This file is a part of Julia. License is MIT: https://julialang.org/license
 
 import LinearAlgebra: checksquare
+using Random: rand!
 
 ## sparse matrix multiplication
 
@@ -735,12 +736,6 @@ function opnormestinv(A::SparseMatrixCSC{T}, t::Integer = min(2,maximum(size(A))
 
     S = zeros(T <: Real ? Int : Ti, n, t)
 
-    function _rand_pm1!(v)
-        for i in eachindex(v)
-            v[i] = rand()<0.5 ? 1 : -1
-        end
-    end
-
     function _any_abs_eq(v,n::Int)
         for vv in v
             if abs(vv)==n
@@ -755,7 +750,7 @@ function opnormestinv(A::SparseMatrixCSC{T}, t::Integer = min(2,maximum(size(A))
     X[1:n,1] .= 1
     for j = 2:t
         while true
-            _rand_pm1!(view(X,1:n,j))
+            rand!(view(X,1:n,j), (-1, 1))
             yaux = X[1:n,j]' * X[1:n,1:j-1]
             if !_any_abs_eq(yaux,n)
                 break
@@ -816,7 +811,7 @@ function opnormestinv(A::SparseMatrixCSC{T}, t::Integer = min(2,maximum(size(A))
                         end
                     end
                     if repeated
-                        _rand_pm1!(view(S,1:n,j))
+                        rand!(view(S,1:n,j), (-1, 1))
                     else
                         break
                     end