Soeren Gebbert c841fe5874 Fixed some OpenMP related bugs. Removed obsolete comments from Makefile. 15 年 前
..
test c841fe5874 Fixed some OpenMP related bugs. Removed obsolete comments from Makefile. 15 年 前
ATLAS_wrapper_blas_level_1.c 28a3d85493 Head section correction. New matrix conversion functions added. 15 年 前
DEPEND db49180dd7 welcome to GRASS 7.0.svn 17 年 前
Makefile 002bbe23df Keep all library dependencies in Grass.make 15 年 前
README db49180dd7 welcome to GRASS 7.0.svn 17 年 前
TODO e22f18b97e Enhanced documentaion of the gmath doxygen file. Fixed several doxygen documentation issues. 15 年 前
blas_level_1.c 28a3d85493 Head section correction. New matrix conversion functions added. 15 年 前
blas_level_2.c e6774c02d1 New band matrix functions. Implemented new conjugate gradent band matrix 15 年 前
blas_level_3.c 28a3d85493 Head section correction. New matrix conversion functions added. 15 年 前
brent.c 8868d4b686 indent -bad -bap -bbb -br -bli0 -bls -cli0 -ncs -fc1 -hnl -i4 \ 17 年 前
ccmath_grass_wrapper.c 28a3d85493 Head section correction. New matrix conversion functions added. 15 年 前
dalloc.c 8868d4b686 indent -bad -bap -bbb -br -bli0 -bls -cli0 -ncs -fc1 -hnl -i4 \ 17 年 前
del2g.c 49b8066c8f Added a new library to grass called ccmath (LGPL license) to replace the 15 年 前
eigen_tools.c 49b8066c8f Added a new library to grass called ccmath (LGPL license) to replace the 15 年 前
fft.c cbb63d89e4 Correct order of rows, cols arguments to fftw_plan_dft_2d 16 年 前
findzc.c 8868d4b686 indent -bad -bap -bbb -br -bli0 -bls -cli0 -ncs -fc1 -hnl -i4 \ 17 年 前
gauss.c e22f18b97e Enhanced documentaion of the gmath doxygen file. Fixed several doxygen documentation issues. 15 年 前
getg.c 8868d4b686 indent -bad -bap -bbb -br -bli0 -bls -cli0 -ncs -fc1 -hnl -i4 \ 17 年 前
gmathlib.dox e6774c02d1 New band matrix functions. Implemented new conjugate gradent band matrix 15 年 前
ialloc.c e22f18b97e Enhanced documentaion of the gmath doxygen file. Fixed several doxygen documentation issues. 15 年 前
la.c 49b8066c8f Added a new library to grass called ccmath (LGPL license) to replace the 15 年 前
lu.c 9cdef39111 Various files have moved from lib/gis to lib/gmath: 16 年 前
max_pow2.c 8868d4b686 indent -bad -bap -bbb -br -bli0 -bls -cli0 -ncs -fc1 -hnl -i4 \ 17 年 前
mult.c 49b8066c8f Added a new library to grass called ccmath (LGPL license) to replace the 15 年 前
rand1.c 8868d4b686 indent -bad -bap -bbb -br -bli0 -bls -cli0 -ncs -fc1 -hnl -i4 \ 17 年 前
solvers_classic_iter.c 28a3d85493 Head section correction. New matrix conversion functions added. 15 年 前
solvers_direct.c 28a3d85493 Head section correction. New matrix conversion functions added. 15 年 前
solvers_direct_cholesky_band.c c841fe5874 Fixed some OpenMP related bugs. Removed obsolete comments from Makefile. 15 年 前
solvers_krylov.c e6774c02d1 New band matrix functions. Implemented new conjugate gradent band matrix 15 年 前
sparse_matrix.c e6774c02d1 New band matrix functions. Implemented new conjugate gradent band matrix 15 年 前
symmetric_band_matrix.c c841fe5874 Fixed some OpenMP related bugs. Removed obsolete comments from Makefile. 15 年 前

README

Date: Wed, 27 Sep 2000 15:41:24 +0000
From: David D Gray

I have checked in the gmath stuff to CVS. This directory might later
contain other kinds of generic routine (fft is one that comes to mind in
view of the investigations into NR). But for now there is only the
BLAS/LAPACK wrappers and supporting structure in la.c.

I thought to follow the libc in separating maths stuff to a separate
directory, even though they are G_*() functions.

I believe it is fairly intuitive to use - developers should use
G_matrix_init() to create a matrix. A vector can be built with setting
cols (or rows as appropriate) to 1. A G_vector_init() might be useful,
but it would have to distinguish between a row and column vector, (is it
needed?). Then use G_[set,get]_matrix_element() to set or retrieve
elements. No-one should need to ever worry about Fortran peculiarities
(like declaring doublereal variables, or calling a foo_() ).

Currently there are: add matrices A+B (doesn't use BLAS), multiply A.B,
invert A^-1, solve simple linear system A.X=B for X given B. Others are
easy to add as required.

David
-----------------------------------

Getting BLAS/LAPACK (one package):

http://netlib.bell-labs.com/netlib/master/readme.html
http://www.netlib.org

http://www.netlib.org/lapack/

Compiling of LAPACK (be sure to have "." in PATH):

Linux:
cd LAPACK
cp INSTALL/make.inc.LINUX make.inc
#now edit Makefile and
#comment line 11 and uncomment line 12 (to include "blaslib" compilation)
#compile with
make

Solaris:
cd LAPACK
cp INSTALL/make.inc.SUN4SOL2 make.inc
#now edit Makefile and
#comment line 11 and uncomment line 12 (to include "blaslib" compilation)
#compile with
make

etc.

See INSTALL/ for further platforms.

--------------------------------------------------------------------
Usage:

Sample Makefile:

MODULE_TOPDIR = /path/to/grass

PGM = test

LIBES = $(GMATHLIB) $(GISLIB)
DEPENDENCIES = $(GMATHLIB) $(GISLIB)

include $(MODULE_TOPDIR)/include/Make/Module.make


Sample module source:

#include
#include
#include

int main (int argc, char *argv[])
{
mat_struct *matrix;

matrix = G_matrix_init (3, 3, 1);
G_matrix_free (matrix);

return 0;
}