LAPACK & TNT

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2 total messages Started by wroot Wed, 30 Aug 2000 00:00

#1303

Author: wroot
Date: Wed, 30 Aug 2000 00:00

28 lines
1701 bytes

HI,

I'm trying to solve the eigenvalue / eigenvector problem in C++ (I need
both). TNT ( http://math.nist.gov/tnt/ ) doesn't have an eigenvalue
problem routine of its own, but it has a lapack.h header file that
supposedly calls LAPACK Fortran subroutines for this.

I installed LAPACK and BLAS RPMs on my Redhat system, however, linking
with lapack doesn't work: When I do

g++ -llapack -o f f.o
or
g++ -llapack -lblas -o f f.o

the linker ld tells me that a bunch of refrences are undefined (
 e_wsfe z_abs c_sqrt s_cmp r_lg10 z_exp c_exp etime_ c_div do_fio pow_dd
z_sqrt s_cat s_stop c_abs d_lg10 z_div s_wsfe s_copy)
Using "grep" I figured out that they are only encountered in lapack
library files.

How can I get this to link? TNT doesn't not provide any documentation
to speak of or support for linking to Fortran routines.

Wroot


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Re: LAPACK & TNT

#1304

Author: Jochen K�pper
Date: Wed, 30 Aug 2000 22:11

15 lines
1461 bytes

wroot@my-deja.com writes:

> g++ -llapack -lblas -o f f.o

g++ -o f f.o -llapack -lblas -lg2c

Think about the the why;-))

Jochen
-- 
http://www.Jochen-Kuepper.de

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