SUBROUTINE CHERK( UPLO, TRANSA, N, K, ALPHA, A, LDA, BETA, C, LDC) CHARACTER * 1 UPLO, TRANSA COMPLEX A(LDA,*), C(LDC,*) INTEGER N, K, LDA, LDC REAL ALPHA, BETA SUBROUTINE CHERK_64( UPLO, TRANSA, N, K, ALPHA, A, LDA, BETA, C, * LDC) CHARACTER * 1 UPLO, TRANSA COMPLEX A(LDA,*), C(LDC,*) INTEGER*8 N, K, LDA, LDC REAL ALPHA, BETA
SUBROUTINE HERK( UPLO, [TRANSA], [N], [K], ALPHA, A, [LDA], BETA, C, * [LDC]) CHARACTER(LEN=1) :: UPLO, TRANSA COMPLEX, DIMENSION(:,:) :: A, C INTEGER :: N, K, LDA, LDC REAL :: ALPHA, BETA SUBROUTINE HERK_64( UPLO, [TRANSA], [N], [K], ALPHA, A, [LDA], BETA, * C, [LDC]) CHARACTER(LEN=1) :: UPLO, TRANSA COMPLEX, DIMENSION(:,:) :: A, C INTEGER(8) :: N, K, LDA, LDC REAL :: ALPHA, BETA
void cherk(char uplo, char transa, int n, int k, float alpha, complex *a, int lda, float beta, complex *c, int ldc);
void cherk_64(char uplo, char transa, long n, long k, float alpha, complex *a, long lda, float beta, complex *c, long ldc);
UPLO = 'U' or 'u' Only the upper triangular part of C is to be referenced.
UPLO = 'L' or 'l' Only the lower triangular part of C is to be referenced.
Unchanged on exit.
TRANSA = 'N' or 'n' C := alpha*A*conjg( A' ) + beta*C.
TRANSA = 'C' or 'c' C := alpha*conjg( A' )*A + beta*C.
Unchanged on exit.
Before entry with UPLO = 'U' or 'u', the leading n by n upper triangular part of the array C must contain the upper triangular part of the Hermitian matrix and the strictly lower triangular part of C is not referenced. On exit, the upper triangular part of the array C is overwritten by the upper triangular part of the updated matrix.
Before entry with UPLO = 'L' or 'l', the leading n by n lower triangular part of the array C must contain the lower triangular part of the Hermitian matrix and the strictly upper triangular part of C is not referenced. On exit, the lower triangular part of the array C is overwritten by the lower triangular part of the updated matrix.
Note that the imaginary parts of the diagonal elements need not be set, they are assumed to be zero, and on exit they are set to zero.