r8ge_np

r8ge_np, an Octave code which carries out nonpivoting linear algebra operations on R8GE_NP matrices (real 64 bit precision general nonpivoting MxN format).

Licensing:

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

Languages:

r8ge_np is available in a C version and a C++ version and a Fortran90 version and a MATLAB version and an Octave version and a Python version.

Related Data and Programs:

r8ge_np_test

linear_algebra, MATLAB codes which carry out various linear algebra operations for matrices stored in a variety of formats.

Source Code:

• r8_uniform_01.m, is a uniform random number generator;
• r8ge_dif2.m, returns the second difference matrix as an R8GE matrix;
• r8ge_mm.m, multiplies two R8GE matrices;
• r8ge_mtv.m, multiplies a vector times an R8GE matrix;
• r8ge_mv.m, multiplies an R8GE matrix times a vector;
• r8ge_print.m, prints an R8GE matrix;
• r8ge_print_some.m, prints some of an R8GE matrix;
• r8ge_random.m, returns a random R8GE matrix;
• r8ge_to_r8vec.m, converts an R8GE matrix to an R8VEC;
• r8ge_np_det.m, returns the determinant of a system factored by R8GE_NP_FA;
• r8ge_np_fa.m, factors an R8GE matrix by nonpivoting Gaussian elimination;
• r8ge_np_inverse.m, returns the inverse of a matrix factored by R8GE_NP_FA;
• r8ge_np_ml.m, multiplies a matrix factored by R8GE_NP_FA times a vector;
• r8ge_np_sl.m, solves a linear system factored by R8GE_NP_FA;
• r8ge_np_trf.m, computes the LU factorization of an R8GE matrix;
• r8ge_np_trm.m, multiplies a matrix factored by R8GE_NP_TRF times a vector;
• r8ge_np_trs.m, solves a linear system factored by R8GE_NP_TRF;
• r8vec_indicator1.m, sets an R8VEC to the indicator1 vector;
• r8vec_print.m, prints an R8VEC;
• r8vec_print_some.m, prints some of an R8VEC;
• r8vec_to_r8ge.m, converts an R8VEC to an R8GE matrix;
• r8vec2_print_some.m, prints some of a pair R8VEC's;