SUBROUTINE ZGETRF( M, N, A, LDA, IPIVOT, INFO) DOUBLE COMPLEX A(LDA,*) INTEGER M, N, LDA, INFO INTEGER IPIVOT(*) SUBROUTINE ZGETRF_64( M, N, A, LDA, IPIVOT, INFO) DOUBLE COMPLEX A(LDA,*) INTEGER*8 M, N, LDA, INFO INTEGER*8 IPIVOT(*)
SUBROUTINE GETRF( [M], [N], A, [LDA], IPIVOT, [INFO]) COMPLEX(8), DIMENSION(:,:) :: A INTEGER :: M, N, LDA, INFO INTEGER, DIMENSION(:) :: IPIVOT SUBROUTINE GETRF_64( [M], [N], A, [LDA], IPIVOT, [INFO]) COMPLEX(8), DIMENSION(:,:) :: A INTEGER(8) :: M, N, LDA, INFO INTEGER(8), DIMENSION(:) :: IPIVOT
void zgetrf(int m, int n, doublecomplex *a, int lda, int *ipivot, int *info);
void zgetrf_64(long m, long n, doublecomplex *a, long lda, long *ipivot, long *info);
The factorization has the form
A = P * L * U
where P is a permutation matrix, L is lower triangular with unit diagonal elements (lower trapezoidal if m > n), and U is upper triangular (upper trapezoidal if m < n).
This is the right-looking Level 3 BLAS version of the algorithm.