Developer Reference

  • 2022.1
  • 12/20/2021
  • Public Content
Contents

?gesv function

Computes the solution to the system of linear equations with a square coefficient matrix
A
and multiple right-hand sides.

Fortran-77 Interface

Calling from Fortran:
call sgesv(n, nrhs, a, lda, ipiv, b, ldb, info) call dgesv(n, nrhs, a, lda, ipiv, b, ldb, info) call cgesv(n, nrhs, a, lda, ipiv, b, ldb, info) call zgesv(n, nrhs, a, lda, ipiv, b, ldb, info) call dsgesv(n, nrhs, a, lda, ipiv, b, ldb, x, ldx, work, swork, iter, info) call zcgesv(n, nrhs, a, lda, ipiv, b, ldb, x, ldx, work, swork, rwork, iter, info)
Calling from C:
sgesv(n, nrhs, a, lda, ipiv, b, ldb, info); dgesv(n, nrhs, a, lda, ipiv, b, ldb, info); cgesv(n, nrhs, a, lda, ipiv, b, ldb, info); zgesv(n, nrhs, a, lda, ipiv, b, ldb, info); dsgesv(n, nrhs, a, lda, ipiv, b, ldb, x, ldx, work, swork, iter, info) zcgesv(n, nrhs, a, lda, ipiv, b, ldb, x, ldx, work, swork, rwork, iter, info)

C Interface

lapack_int LAPACKE_sgesv(int matrix_layout, lapack_int n, lapack_int nrhs, float* a, lapack_int lda, lapack_int* ipiv, float* b, lapack_int ldb); lapack_int LAPACKE_dgesv(int matrix_layout, lapack_int n, lapack_int nrhs, double* a, lapack_int lda, lapack_int* ipiv, double* b, lapack_int ldb); lapack_int LAPACKE_cgesv(int matrix_layout, lapack_int n, lapack_int nrhs, lapack_complex_float* a, lapack_int lda, lapack_int* ipiv, lapack_complex_float* b, lapack_int ldb); lapack_int LAPACKE_zgesv(int matrix_layout, lapack_int n, lapack_int nrhs, lapack_complex_double* a, lapack_int lda, lapack_int* ipiv, lapack_complex_double* b, lapack_int ldb); lapack_int LAPACKE_dsgesv(int matrix_layout, lapack_int n, lapack_int nrhs, double * a, lapack_int lda, lapack_int * ipiv, double * b, lapack_int ldb, double * x, lapack_int ldx, lapack_int * iter); lapack_int LAPACKE_zcgesv(int matrix_layout, lapack_int n, lapack_int nrhs, lapack_complex_double * a, lapack_int lda, lapack_int * ipiv, lapack_complex_double * b, lapack_int ldb, lapack_complex_double * x, lapack_int ldx, lapack_int * iter);

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.