fix various typos in comments (JuliaArrays#1185)

Author: spaette

src/lu.jl

@@ -38,7 +38,7 @@ else
     (:(Val{true}), :(Val{false}))
 end
 for pv in pivot_options
-    # ... define each `pivot::Val{true/false}` method individually to avoid ambiguties
+    # ... define each `pivot::Val{true/false}` method individually to avoid ambiguities
     @eval function lu(A::StaticLUMatrix, pivot::$pv; check = true)
         L, U, p = _lu(A, pivot, check)
         LU(L, U, p)

test/inv.jl

@@ -98,7 +98,7 @@ end
 end
 
 #-------------------------------------------------------------------------------
-# More comprehensive but qualitiative testing for inv() accuracy
+# More comprehensive but qualitative testing for inv() accuracy
 #=
 using PyPlot
 

test/linalg.jl

@@ -61,7 +61,7 @@ end
             m1 = @SMatrix T[2 4; 6 8]
             m2 = @SMatrix T[4 3; 2 1]
 
-            # Use that these small integers can be represetnted exactly
+            # Use that these small integers can be represented exactly
             # as floating point numbers. In general, the comparison of
             # floats should use `≈` instead of `===`.
             @test @inferred(muladd(c, v1, v2)) === @SVector T[8, 11, 14, 17]
@@ -79,7 +79,7 @@ end
             m1 = @SMatrix T[2 4; 6 8]
             m2 = @SMatrix T[4 3; 2 1]
 
-            # Use that these small integers can be represetnted exactly
+            # Use that these small integers can be represented exactly
             # as floating point numbers. In general, the comparison of
             # floats should use `≈` instead of `===`.
             # These should be turned into `vfmadd...` calls

test/pinv.jl

@@ -2,7 +2,7 @@ using StaticArrays, Test, LinearAlgebra
 
 tol = 1e-13
 
-@testset "Moore–Penrose inverse (Peseudo-inverse)" begin
+@testset "Moore–Penrose inverse (pseudoinverse)" begin
     M1 = @SMatrix [1.5 1.3; 1.2 1.9]
     N1 = pinv(M1)
     @test norm(M1*N1*M1 - M1) < tol