## LAPACK example programs [ from NAG ]

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### LAPACK example programs [ from NAG ]

Newly created Fortran77 example programs for LAPACK, have been released by the Numerical Algorithms Group (NAG).
These example programs are designed to help less experienced users to call LAPACK routines correctly.

http://www.nag.com/lapack-ex/lapack-ex.html

They provide an example of the use of each of the double precision LAPACK drivers.
Each example comprises :
- a description of the problem,
- the example program in Fortran77.
- the example data
- and the example result.

Thanks to the NAG company, to NAG Consultant Sven Hammarling and to his team for sharing with us their hard work.

Posts: 586
Joined: Wed Dec 08, 2004 7:07 pm

### Re: LAPACK example programs [ from NAG ]

Nice example!
gektor

Posts: 1
Joined: Sun Jun 25, 2006 7:37 pm

i have been searching over net for these examples
great
tailender

Posts: 1
Joined: Tue Nov 07, 2006 2:52 am

kdallen

Posts: 39
Joined: Sun Jan 28, 2007 12:48 am

edit: Nevermind... I hate IE.
creative4w3

Posts: 1
Joined: Mon Dec 10, 2007 6:55 pm

### Re: LAPACK example programs [ from NAG ]

Thank you for all your help much appreciated.
stevegd

Posts: 1
Joined: Fri Jan 27, 2012 12:00 am

### Re: LAPACK example programs [ from NAG ]

Hi every one, I am newly registered and I have a lot of Questions:
first: I am tring to run dgeqrf from plasma for factorization, I just copy the same example in plasmas example and add
for(i= 0 ; i < N ; i++ )
{
for ( j = 0 ; j < p ; j++ )
{
printf("%2.10e\t", *(Q+i*N+j));
}
printf("\n");
}
to print the matrix A1, and resulting Q, R.
but I got a very bad orthogonality results of Q, and a big error of (A1-QR).

can any one help me to figure out what going on?
waeldalal

Posts: 1
Joined: Sun Dec 30, 2012 4:54 am

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