// exsw6.swift  create functions, procedures, subroutines

#if os(OSX) || os(iOS) // for libraries, portable for OSX and Linux
import Foundation
#elseif os(Linux)
import Glibc
#endif// 

print("exsw6.swift running");

let vals = [2, 4, 6]
for aval in vals {
  print(aval)
}

func matcpy(_ a: [[Double]]) -> [[Double]] {
  let n = a.count
  let m = a[0].count
  var inv = [[Double]](repeating:[Double](repeating:0.0,count:m),count:n)
  for i in 0..<n {
    for j in 0..<m {
      inv[i][j] = a[i][j]
    } // end i
  } // end j
  return inv
} // end matcpy

var A = [[1.2, 1.3, 1.5],[2.5, 3.5, 4.5]]
var B = matcpy(A)
print("B= \(B)")