1flexiblas_switch(3)          The FlexiBLAS Library         flexiblas_switch(3)
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NAME

6       flexiblas_switch - switch the currently used FlexiBLAS backend.
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SYNOPSIS

10       #include <flexiblas/flexiblas_api.h>
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12       int flexiblas_switch(int id );
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14       Link with -lflexiblas.
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DESCRIPTION

18       flexiblas_switch  switches  the currently used BLAS backend. The id pa‐
19       rameter is the id of the previously loaded backend. This  id  value  is
20       returned  by  flexiblas_load_backend or flexiblas_load_backend_library.
21       The function is not thread safe and  switching  the  backend  inside  a
22       threaded environment can cause problems if there is a BLAS call running
23       at the same time.
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25       The special id 0 resets the backend to the  default  backend  which  is
26       loaded at the initialization before the program starts.
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RETURN VALUE

31       On success, it returns zero.
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ERRORS

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

40       The following example loads the NETLIB BLAS backend and switches to it.
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42   Program Source
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44       #include <stdio.h>
45       #include <flexiblas/flexiblas_api.h>
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47       int main ( int argc, char **argv ) {
48            int netlib_id;
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50            netlib_id = flexiblas_load_backend("NETLIB");
51            if ( netlib_id < 0 ) {
52                 fprintf(stderr, "Failed to load the NETLIB backend.\n");
53                 return -1;
54            }
55            /* Switch to the NETLIB backend */
56            flexiblas_switch(netlib_id);
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58            /* DGEMM performed with the NETLIB backend. */
59            dgemm_(.....);
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61            return 0;
62       }
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SEE ALSO

66       flexiblas_load_backend_library(3), flexiblas_load_backend(3)
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REPORTING BUGS

70       The current information about the developers and reporting bugs can  be
71       found on the FlexiBLAS homepage.
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73       FlexiBLAS   Homepage:  <http://www.mpi-magdeburg.mpg.de/projects/flexi‐
74       blas>
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AUTHORS

78        Martin Koehler, Jens Saak
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82       Copyright (C) 2013-2022 Martin Koehler
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LICENSE

85       License  GPLv3+:  GNU  GPL  version  3  or  later   <http://gnu.org/li‐
86       censes/gpl.html>.   This  is  free software: you are free to change and
87       redistribute it.  There is NO WARRANTY, to the extent permitted by law.
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92M. Koehler                         2013-2022               flexiblas_switch(3)
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