mirror of
https://github.com/amd/blis.git
synced 2026-05-11 01:30:00 +00:00
ed3e33d548
Details:
- Updated herk_front() and her2k_front() to explicitly set the imaginary
components of the diagonal entries of C to zero after the computation
is complete. This is needed in case downstream applications read the
full diagonal entries (i.e., including imaginary part), which could, in
the absence of this modification, accumulate numerical error from
subsequent rank-k/rank-2k updates.
- Updated BLAS compatibility wrappers for herk and her2k to return early
if:
n == 0 || ( ( alpha == 0 || k == 0 ) && beta == 1 )
This also results in the imaginary components of diagonal entries NOT
being set to zero (see above), which is consistent with BLAS.
- Updated mkherm to use setid instead of an inlined loop over the
diagonal.
131 lines
4.4 KiB
C
131 lines
4.4 KiB
C
/*
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BLIS
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An object-based framework for developing high-performance BLAS-like
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libraries.
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Copyright (C) 2014, The University of Texas at Austin
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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- Neither the name of The University of Texas at Austin nor the names
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of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "blis.h"
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//
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// Define BLAS-to-BLIS interfaces.
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//
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#undef GENTFUNCCO
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#define GENTFUNCCO( ftype, ftype_r, ch, chr, blasname, blisname ) \
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\
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void PASTEF77(ch,blasname)( \
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f77_char* uploc, \
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f77_char* transa, \
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f77_int* m, \
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f77_int* k, \
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ftype* alpha, \
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ftype* a, f77_int* lda, \
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ftype* b, f77_int* ldb, \
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ftype_r* beta, \
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ftype* c, f77_int* ldc \
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) \
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{ \
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uplo_t blis_uploc; \
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trans_t blis_transa; \
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dim_t m0, k0; \
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inc_t rs_a, cs_a; \
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inc_t rs_b, cs_b; \
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inc_t rs_c, cs_c; \
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err_t init_result; \
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\
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/* Initialize BLIS (if it is not already initialized). */ \
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bli_init_auto( &init_result ); \
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\
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/* Perform BLAS parameter checking. */ \
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PASTEBLACHK(blasname)( MKSTR(ch), \
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MKSTR(blasname), \
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uploc, \
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transa, \
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m, \
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k, \
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lda, \
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ldb, \
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ldc ); \
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\
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/* Map BLAS chars to their corresponding BLIS enumerated type value. */ \
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bli_param_map_netlib_to_blis_uplo( *uploc, &blis_uploc ); \
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bli_param_map_netlib_to_blis_trans( *transa, &blis_transa ); \
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\
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/* Convert/typecast negative values of m and k to zero. */ \
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bli_convert_blas_dim1( *m, m0 ); \
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bli_convert_blas_dim1( *k, k0 ); \
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\
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/* We emulate the BLAS early return behavior with the following
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conditional, which returns if one of the following is true:
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- matrix C is empty
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- the rank-2k product is empty (either because alpha is zero or k
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is zero) AND matrix C is not scaled. */ \
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if ( m0 == 0 || \
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( ( PASTEMAC(ch,eq0)( *alpha ) || k0 == 0 ) \
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&& PASTEMAC(chr,eq1)( *beta ) \
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) \
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) \
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{ \
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/* Finalize BLIS (if it was initialized above). */ \
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bli_finalize_auto( init_result ); \
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\
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return; \
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} \
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\
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/* Set the row and column strides of the matrix operands. */ \
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rs_a = 1; \
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cs_a = *lda; \
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rs_b = 1; \
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cs_b = *ldb; \
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rs_c = 1; \
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cs_c = *ldc; \
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\
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/* Call BLIS interface. */ \
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PASTEMAC(ch,blisname)( blis_uploc, \
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blis_transa, \
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blis_transa, \
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m0, \
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k0, \
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alpha, \
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a, rs_a, cs_a, \
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b, rs_b, cs_b, \
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beta, \
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c, rs_c, cs_c ); \
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\
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/* Finalize BLIS (if it was initialized above). */ \
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bli_finalize_auto( init_result ); \
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}
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#ifdef BLIS_ENABLE_BLAS2BLIS
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INSERT_GENTFUNCCO_BLAS( her2k, her2k )
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#endif
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