04-16-2012
Quote:
Originally Posted by
nmset
I would have preffered that rubbish code doesn't get compiled at all, a compiler is supposed to be a non-tolerant tool.
Well, that's the thing -- it's not
always rubbish. The compiler makes few assumptions about your system. It's supposed to be used in many more situations than just generic user-mode code -- you can make bootloaders out of it for instance, and even entire operating systems. It just does what you tell it to.
So the compiler doesn't second-guess you. It'll let you make a 3-gigabyte stack array on the assumption you wouldn't have asked for it if it weren't possible...
Variables inside array size descriptions is nonsense though. Some compilers it works, some compilers it doesn't, some compilers it crashes. I get the impression it might be interpreting the values you put in as something other than the literal values of the integers themselves -- their addresses perhaps.
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LEARN ABOUT CENTOS
slacpy.f
slacpy.f(3) LAPACK slacpy.f(3)
NAME
slacpy.f -
SYNOPSIS
Functions/Subroutines
subroutine slacpy (UPLO, M, N, A, LDA, B, LDB)
SLACPY copies all or part of one two-dimensional array to another.
Function/Subroutine Documentation
subroutine slacpy (characterUPLO, integerM, integerN, real, dimension( lda, * )A, integerLDA, real, dimension( ldb, * )B, integerLDB)
SLACPY copies all or part of one two-dimensional array to another.
Purpose:
SLACPY copies all or part of a two-dimensional matrix A to another
matrix B.
Parameters:
UPLO
UPLO is CHARACTER*1
Specifies the part of the matrix A to be copied to B.
= 'U': Upper triangular part
= 'L': Lower triangular part
Otherwise: All of the matrix A
M
M is INTEGER
The number of rows of the matrix A. M >= 0.
N
N is INTEGER
The number of columns of the matrix A. N >= 0.
A
A is REAL array, dimension (LDA,N)
The m by n matrix A. If UPLO = 'U', only the upper triangle
or trapezoid is accessed; if UPLO = 'L', only the lower
triangle or trapezoid is accessed.
LDA
LDA is INTEGER
The leading dimension of the array A. LDA >= max(1,M).
B
B is REAL array, dimension (LDB,N)
On exit, B = A in the locations specified by UPLO.
LDB
LDB is INTEGER
The leading dimension of the array B. LDB >= max(1,M).
Author:
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
September 2012
Definition at line 104 of file slacpy.f.
Author
Generated automatically by Doxygen for LAPACK from the source code.
Version 3.4.2 Tue Sep 25 2012 slacpy.f(3)