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4fa4cb0734
Details: - Removed four trailing spaces after "BLIS" that occurs in most files' commented-out license headers. - Added UT copyright lines to some files. (These files previously had only AMD copyright lines but were contributed to by both UT and AMD.) - In some files' copyright lines, expanded 'The University of Texas' to 'The University of Texas at Austin'. - Fixed various typos/misspellings in some license headers.
143 lines
4.4 KiB
C
143 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 GENTFUNC
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#define GENTFUNC( ftype, ch, blasname, blisname ) \
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\
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void PASTEF77(ch,blasname) \
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( \
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const f77_char* transa, \
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const f77_int* m, \
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const f77_int* n, \
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const ftype* alpha, \
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const ftype* a, const f77_int* lda, \
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const ftype* x, const f77_int* incx, \
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const ftype* beta, \
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ftype* y, const f77_int* incy \
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) \
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{ \
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trans_t blis_transa; \
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dim_t m0, n0; \
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dim_t m_y, n_x; \
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ftype* x0; \
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ftype* y0; \
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inc_t incx0; \
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inc_t incy0; \
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inc_t rs_a, cs_a; \
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\
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/* Initialize BLIS. */ \
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bli_init_auto(); \
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\
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/* Perform BLAS parameter checking. */ \
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PASTEBLACHK(blasname) \
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( \
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MKSTR(ch), \
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MKSTR(blasname), \
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transa, \
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m, \
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n, \
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lda, \
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incx, \
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incy \
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); \
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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_trans( *transa, &blis_transa ); \
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\
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/* Convert/typecast negative values of m and n to zero. */ \
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bli_convert_blas_dim1( *m, m0 ); \
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bli_convert_blas_dim1( *n, n0 ); \
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\
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/* Determine the dimensions of x and y so we can adjust the increments,
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if necessary.*/ \
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bli_set_dims_with_trans( blis_transa, m0, n0, &m_y, &n_x ); \
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\
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/* BLAS handles cases where trans(A) has no columns, and x has no elements,
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in a peculiar way. In these situations, BLAS returns without performing
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any action, even though most sane interpretations of gemv would have the
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the operation reduce to y := beta * y. Here, we catch those cases that
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BLAS would normally mishandle and emulate the BLAS exactly so as to
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provide "bug-for-bug" compatibility. Note that this extreme level of
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compatibility would not be as much of an issue if it weren't for the
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fact that some BLAS test suites actually test for these cases. Also, it
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should be emphasized that BLIS, if called natively, does NOT exhibit
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this quirky behavior; it will scale y by beta, as one would expect. */ \
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if ( m_y > 0 && n_x == 0 ) \
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{ \
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/* Finalize BLIS. */ \
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bli_finalize_auto(); \
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\
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return; \
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} \
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\
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/* If the input increments are negative, adjust the pointers so we can
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use positive increments instead. */ \
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bli_convert_blas_incv( n_x, (ftype*)x, *incx, x0, incx0 ); \
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bli_convert_blas_incv( m_y, (ftype*)y, *incy, y0, incy0 ); \
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\
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/* Set the row and column strides of A. */ \
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rs_a = 1; \
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cs_a = *lda; \
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\
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/* Call BLIS interface. */ \
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PASTEMAC2(ch,blisname,BLIS_TAPI_EX_SUF) \
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( \
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blis_transa, \
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BLIS_NO_CONJUGATE, \
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m0, \
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n0, \
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(ftype*)alpha, \
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(ftype*)a, rs_a, cs_a, \
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x0, incx0, \
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(ftype*)beta, \
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y0, incy0, \
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NULL, \
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NULL \
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); \
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\
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/* Finalize BLIS. */ \
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bli_finalize_auto(); \
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}
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#ifdef BLIS_ENABLE_BLAS
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INSERT_GENTFUNC_BLAS( gemv, gemv )
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#endif
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