Created
March 20, 2017 06:34
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invert matrix with Accelerate framework in Swift
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| func invert(matrix : [Double]) -> [Double] { | |
| var inMatrix = matrix | |
| var N = __CLPK_integer(sqrt(Double(matrix.count))) | |
| var pivots = Array(repeating: 0 as __CLPK_integer, count: Int(N)) | |
| var workspace = Array(repeating: 0.0 as Double, count: Int(N)) | |
| var error : __CLPK_integer = 0 | |
| dgetrf_(&N, &N, &inMatrix, &N, &pivots, &error) | |
| dgetri_(&N, &inMatrix, &N, &pivots, &workspace, &N, &error) | |
| return inMatrix | |
| } | |
| let matrix: [Double] = [2.0, 5.0, -3.0, -7.0] | |
| let invertedMatrix = invert(matrix: matrix) |
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