# NAG CL InterfaceF04 (Linsys)Simultaneous Linear Equations

F04 (Linsys) Chapter Introduction – A description of the Chapter and an overview of the algorithms available.

Function
Mark of
Introduction

Purpose
f04bac
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8 nag_linsys_real_square_solve
Computes the solution, estimated condition number and error-bound to a real system of linear equations
f04bbc
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8 nag_linsys_real_band_solve
Computes the solution, estimated condition number and error-bound to a real banded system of linear equations
f04bcc
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8 nag_linsys_real_tridiag_solve
Computes the solution, estimated condition number and error-bound to a real tridiagonal system of linear equations
f04bdc
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8 nag_linsys_real_posdef_solve
Computes the solution, estimated condition number and error-bound to a real symmetric positive definite system of linear equations
f04bec
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8 nag_linsys_real_posdef_packed_solve
Computes the solution, estimated condition number and error-bound to a real symmetric positive definite system of linear equations, packed storage
f04bfc
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8 nag_linsys_real_posdef_band_solve
Computes the solution, estimated condition number and error-bound to a real symmetric positive definite banded system of linear equations
f04bgc
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8 nag_linsys_real_posdef_tridiag_solve
Computes the solution, estimated condition number and error-bound to a real symmetric positive definite tridiagonal system of linear equations
f04bhc
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8 nag_linsys_real_symm_solve
Computes the solution, estimated condition number and error-bound to a real symmetric system of linear equations
f04bjc
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8 nag_linsys_real_symm_packed_solve
Computes the solution, estimated condition number and error-bound to a real symmetric system of linear equations, packed storage
f04cac
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8 nag_linsys_complex_square_solve
Computes the solution, estimated condition number and error-bound to a complex system of linear equations
f04cbc
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8 nag_linsys_complex_band_solve
Computes the solution, estimated condition number and error-bound to a complex banded system of linear equations
f04ccc
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8 nag_linsys_complex_tridiag_solve
Computes the solution, estimated condition number and error-bound to a complex tridiagonal system of linear equations
f04cdc
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8 nag_linsys_complex_posdef_solve
Computes the solution, estimated condition number and error-bound to a complex Hermitian positive definite system of linear equations
f04cec
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8 nag_linsys_complex_posdef_packed_solve
Computes the solution, estimated condition number and error-bound to a complex Hermitian positive definite system of linear equations, packed storage
f04cfc
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8 nag_linsys_complex_posdef_band_solve
Computes the solution, estimated condition number and error-bound to a complex Hermitian positive definite banded system of linear equations
f04cgc
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8 nag_linsys_complex_posdef_tridiag_solve
Computes the solution, estimated condition number and error-bound to a complex Hermitian positive definite tridiagonal system of linear equations
f04chc
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8 nag_linsys_complex_herm_solve
Computes the solution and error-bound to a complex Hermitian system of linear equations
f04cjc
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8 nag_linsys_complex_herm_packed_solve
Computes the solution, estimated condition number and error-bound to a complex Hermitian system of linear equations, packed storage
f04dhc
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8 nag_linsys_complex_symm_solve
Computes the solution, estimated condition number and error-bound to a complex symmetric system of linear equations
f04djc
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8 nag_linsys_complex_symm_packed_solve
Computes the solution, estimated condition number and error-bound to a complex symmetric system of linear equations, packed storage
f04mcc
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1 nag_linsys_real_posdef_vband_solve
Approximate solution of real symmetric positive definite variable-bandwidth simultaneous linear equations (coefficient matrix already factorized by f01mcc)
f04ydc
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24 nag_linsys_real_gen_norm_rcomm
Norm estimation (for use in condition estimation), real rectangular matrix
f04zdc
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24 nag_linsys_complex_gen_norm_rcomm
Norm estimation (for use in condition estimation), complex rectangular matrix