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flexiblas_switch(3)	     The FlexiBLAS Library	   flexiblas_switch(3)

NAME
       flexiblas_switch	- switch the currently used FlexiBLAS backend.

SYNOPSIS
       #include	<flexiblas/flexiblas_api.h>

       int flexiblas_switch(int	id );

       Link with -lflexiblas.

DESCRIPTION
       flexiblas_switch	switches the currently used BLAS backend. The id para-
       meter  is the id	of the previously loaded backend. This id value	is re-
       turned by flexiblas_load_backend	or flexiblas_load_backend_library. The
       function	is not thread safe and switching the backend inside a threaded
       environment can cause problems if there is a BLAS call running  at  the
       same time.

       The  special  id	 0  resets the backend to the default backend which is
       loaded at the initialization before the program starts.

RETURN VALUE
       On success, it returns zero.

ERRORS
       All negative return values are errors. This happens if the id is	out of
       range.

EXAMPLES
       The following example loads the NETLIB BLAS backend and switches	to it.

   Program Source

       #include	<stdio.h>
       #include	<flexiblas/flexiblas_api.h>

       int main	( int argc, char **argv	) {
	    int	netlib_id;

	    netlib_id =	flexiblas_load_backend("NETLIB");
	    if ( netlib_id < 0 ) {
		 fprintf(stderr, "Failed to load the NETLIB backend.\n");
		 return	-1;
	    }
	    /* Switch to the NETLIB backend */
	    flexiblas_switch(netlib_id);

	    /* DGEMM performed with the	NETLIB backend.	*/
	    dgemm_(.....);

	    return 0;
       }

SEE ALSO
       flexiblas_load_backend_library(3), flexiblas_load_backend(3)

REPORTING BUGS
       The current information about the developers and	reporting bugs can  be
       found on	the FlexiBLAS homepage.

       FlexiBLAS   Homepage:  <http://www.mpi-magdeburg.mpg.de/projects/flexi-
       blas>

AUTHORS
	Martin Koehler,	Jens Saak

COPYRIGHT
       Copyright (C) 2013-2025 Martin Koehler

LICENSE
       License	GPLv3+:	 GNU  GPL  version  3  or  later   <http://gnu.org/li-
       censes/gpl.html>.   This	 is  free software: you	are free to change and
       redistribute it.	 There is NO WARRANTY, to the extent permitted by law.

M. Koehler			   2013-2025		   flexiblas_switch(3)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=flexiblas_switch&sektion=3&manpath=FreeBSD+Ports+14.3.quarterly>

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