/usr/share/gnudatalanguage/lib/matrix_multiply.pro is in libgnudatalanguage0 0.9.7-6.
This file is owned by root:root, with mode 0o644.
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; NAME: MATRIX_MULTIPLY
;
; PURPOSE: GDL substitute to the IDL intrinsic function
;
; AUTHOR: Philippe Prugniel 2008/02/29
;
; Modifications:
; 05-Feb-2013: when GDL is compiled with Eigen Lib., we use internal
; fast MATMUL function. It is not ready for Complex/DoubleComplex
; 01-Mar-2013: with Eigen Lib, matmul function is OK with complex values, removed
; some code
; 28-Mar-2013: MATMUL removed, direct interface to Eigen3, all types
; should be OK
;
; Copyright (C) 2008, 2013.
; This program is free software; you can redistribute it and/or modify
; it under the terms of the GNU General Public License as published by
; the Free Software Foundation; either version 2 of the License, or
; (at your option) any later version.
;
;-----------------------------------------------------------------------------
;
function MATRIX_MULTIPLY, a, b, ATRANSPOSE=atr, BTRANSPOSE=btr, help=help
Message,"Unconsitent GDL Install: Matrix_multpily is now and INTERNAL function, please report"
;
ON_ERROR, 2
;
if KEYWORD_SET(help) then begin
print, 'function MATRIX_MULTIPLY, a, b, ATRANSPOSE=atr, BTRANSPOSE=btr, help=help'
return, -1
endif
;
IF (N_PARAMS() NE 2) THEN BEGIN
MESSAGE, 'Incorrect number of arguments.'
ENDIF
;
; note by AC, 28 MArch 2013: we don't removed that if we need
; to go back to basic tests related to Eigen3 ...
;
; "type" will be 1 if GDL compiled with Eigen, 0
; !matmul_quiet to avoid repeating internal message if no Eigen around ...
;
;DEFSYSV, "!matmul_quiet", exist=quiet
;if ~quiet then begin
; type=MATMUL(/available, quiet=quiet)
; DEFSYSV, "!matmul_quiet", 1, 1
;endif else begin
; type=MATMUL(/available,/quiet)
;endelse
;
;if (type EQ 0) then begin
case (1) of
KEYWORD_SET(atr) and not KEYWORD_SET(btr): return, TRANSPOSE(a) # b
KEYWORD_SET(btr) and not KEYWORD_SET(atr): return, a # TRANSPOSE(b)
KEYWORD_SET(atr) and KEYWORD_SET(btr): return, TRANSPOSE(a) # TRANSPOSE(b)
else : return, a # b
endcase
;endif else begin
; return, MATMUL(a, b, ATRANSPOSE=atr, BTRANSPOSE=btr, debug=debug)
;endelse
;
end
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