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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.
289 lines
8.5 KiB
C
289 lines
8.5 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 nor the names of its
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contributors may be used to endorse or promote products derived
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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 <stdio.h>
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#include "blis.h"
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int main( int argc, char** argv )
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{
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obj_t norm1, normi, normf;
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obj_t x, y, a, b, c, d, e, f, g;
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num_t dt;
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dim_t m, n;
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inc_t rs, cs;
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//
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// This file demonstrates working with vector and matrix objects in the
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// context of various utility operations.
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//
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//
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// Example 1: Compute various vector norms.
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//
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printf( "\n#\n# -- Example 1 --\n#\n\n" );
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// Create a few matrices to work with.
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m = 1; n = 5; rs = 0; cs = 0;
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bli_obj_create( BLIS_DOUBLE, m, n, rs, cs, &x );
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bli_obj_create( BLIS_DCOMPLEX, m, n, rs, cs, &y );
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// Let's also create some scalar objects to hold the norms. Note that when
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// computing the norm alpha of a vector 'x', the datatype of alpha must be
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// equal to the real projection of the datatype of 'x'.
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dt = BLIS_DOUBLE;
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bli_obj_create_1x1( dt, &norm1 );
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bli_obj_create_1x1( dt, &normi );
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bli_obj_create_1x1( dt, &normf );
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// Initialize the vectors to random values.
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bli_randv( &x );
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bli_randv( &y );
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bli_printm( "x:", &x, "%4.1f", "" );
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// Compute the one, infinity, and frobenius norms of 'x'.
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bli_norm1v( &x, &norm1 );
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bli_normiv( &x, &normi );
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bli_normfv( &x, &normf );
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bli_printm( "x: 1-norm:", &norm1, "%4.1f", "" );
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bli_printm( "x: infinity norm:", &normi, "%4.1f", "" );
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bli_printm( "x: frobenius norm:", &normf, "%4.1f", "" );
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bli_printm( "y:", &y, "%4.1f", "" );
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// Compute the one, infinity, and frobenius norms of 'y'. Note that we
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// can reuse the same scalars from before for computing norms of
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// dcomplex matrices, since the real projection of dcomplex is double.
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bli_norm1v( &y, &norm1 );
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bli_normiv( &y, &normi );
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bli_normfv( &y, &normf );
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bli_printm( "y: 1-norm:", &norm1, "%4.1f", "" );
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bli_printm( "y: infinity norm:", &normi, "%4.1f", "" );
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bli_printm( "y: frobenius norm:", &normf, "%4.1f", "" );
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//
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// Example 2: Compute various matrix norms.
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//
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printf( "\n#\n# -- Example 2 --\n#\n\n" );
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// Create a few matrices to work with.
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m = 5; n = 6; rs = 0; cs = 0;
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bli_obj_create( BLIS_DOUBLE, m, n, rs, cs, &a );
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bli_obj_create( BLIS_DCOMPLEX, m, n, rs, cs, &b );
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// Initialize the matrices to random values.
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bli_randm( &a );
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bli_randm( &b );
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bli_printm( "a:", &a, "%4.1f", "" );
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// Compute the one-norm of 'a'.
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bli_norm1m( &a, &norm1 );
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bli_normim( &a, &normi );
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bli_normfm( &a, &normf );
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bli_printm( "a: 1-norm:", &norm1, "%4.1f", "" );
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bli_printm( "a: infinity norm:", &normi, "%4.1f", "" );
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bli_printm( "a: frobenius norm:", &normf, "%4.1f", "" );
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bli_printm( "b:", &b, "%4.1f", "" );
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// Compute the one-norm of 'b'.
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bli_norm1m( &b, &norm1 );
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bli_normim( &b, &normi );
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bli_normfm( &b, &normf );
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bli_printm( "b: 1-norm:", &norm1, "%4.1f", "" );
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bli_printm( "b: infinity norm:", &normi, "%4.1f", "" );
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bli_printm( "b: frobenius norm:", &normf, "%4.1f", "" );
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//
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// Example 3: Make a real matrix explicitly symmetric (or Hermitian).
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//
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printf( "\n#\n# -- Example 3 --\n#\n\n" );
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// Create a few matrices to work with.
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m = 4; n = 4; rs = 0; cs = 0;
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bli_obj_create( BLIS_DOUBLE, m, n, rs, cs, &c );
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bli_obj_create( BLIS_DOUBLE, m, n, rs, cs, &d );
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// Initialize all of 'c' to -1.0 to simulate junk values.
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bli_setm( &BLIS_MINUS_ONE, &c );
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// Set the structure and uplo of 'c'.
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bli_obj_set_struc( BLIS_SYMMETRIC, &c );
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bli_obj_set_uplo( BLIS_LOWER, &c );
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// Randomize the lower triangle of 'c'.
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bli_randm( &c );
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bli_printm( "c (initial state):", &c, "%4.1f", "" );
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// mksymm on a real matrix transposes the stored triangle into the
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// unstored triangle, making the matrix densely symmetric.
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bli_mksymm( &c );
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bli_printm( "c (after mksymm on lower triangle):", &c, "%4.1f", "" );
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// Digression: Most people think only of complex matrices as being able
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// to be complex. However, in BLIS, we define Hermitian operations on
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// real matrices, too--they are simply equivalent to the corresponding
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// symmetric operation. For example, when we make a real matrix explicitly
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// Hermitian, the result is indistinguishable from making it symmetric.
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// Initialize all of 'd' to -1.0 to simulate junk values.
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bli_setm( &BLIS_MINUS_ONE, &d );
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bli_obj_set_struc( BLIS_HERMITIAN, &d );
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bli_obj_set_uplo( BLIS_LOWER, &d );
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// Randomize the lower triangle of 'd'.
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bli_randm( &d );
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bli_printm( "d (initial state):", &d, "%4.1f", "" );
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// mkherm on a real matrix behaves the same as mksymm, as there are no
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// imaginary elements to conjugate.
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bli_mkherm( &d );
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bli_printm( "d (after mkherm on lower triangle):", &d, "%4.1f", "" );
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//
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// Example 4: Make a complex matrix explicitly symmetric or Hermitian.
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//
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printf( "\n#\n# -- Example 4 --\n#\n\n" );
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// Create a few matrices to work with.
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m = 4; n = 4; rs = 0; cs = 0;
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bli_obj_create( BLIS_DCOMPLEX, m, n, rs, cs, &e );
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bli_obj_create( BLIS_DCOMPLEX, m, n, rs, cs, &f );
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// Initialize all of 'e' to -1.0 to simulate junk values.
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bli_setm( &BLIS_MINUS_ONE, &e );
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// Set the structure and uplo of 'e'.
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bli_obj_set_struc( BLIS_SYMMETRIC, &e );
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bli_obj_set_uplo( BLIS_UPPER, &e );
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// Randomize the upper triangle of 'e'.
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bli_randm( &e );
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bli_printm( "e (initial state):", &e, "%4.1f", "" );
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// mksymm on a complex matrix transposes the stored triangle into the
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// unstored triangle.
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bli_mksymm( &e );
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bli_printm( "e (after mksymm):", &e, "%4.1f", "" );
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// Initialize all of 'f' to -1.0 to simulate junk values.
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bli_setm( &BLIS_MINUS_ONE, &f );
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// Set the structure and uplo of 'f'.
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bli_obj_set_struc( BLIS_HERMITIAN, &f );
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bli_obj_set_uplo( BLIS_UPPER, &f );
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// Randomize the upper triangle of 'f'.
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bli_randm( &f );
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bli_printm( "f (initial state):", &f, "%4.1f", "" );
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// mkherm on a complex matrix transposes and conjugates the stored
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// triangle into the unstored triangle.
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bli_mkherm( &f );
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bli_printm( "f (after mkherm):", &f, "%4.1f", "" );
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//
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// Example 5: Make a real matrix explicitly triangular.
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//
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printf( "\n#\n# -- Example 5 --\n#\n\n" );
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// Create a few matrices to work with.
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m = 5; n = 5; rs = 0; cs = 0;
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bli_obj_create( BLIS_DOUBLE, m, n, rs, cs, &g );
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// Initialize all of 'g' to -1.0 to simulate junk values.
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bli_setm( &BLIS_MINUS_ONE, &g );
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// Set the structure and uplo of 'g'.
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bli_obj_set_struc( BLIS_TRIANGULAR, &g );
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bli_obj_set_uplo( BLIS_LOWER, &g );
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// Randomize the lower triangle of 'g'.
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bli_randm( &g );
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bli_printm( "g (initial state):", &g, "%4.1f", "" );
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// mktrim does not explicitly copy any data, since presumably the stored
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// triangle already contains the data of interest. However, mktrim does
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// explicitly writes zeros to the unstored region.
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bli_mktrim( &g );
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bli_printm( "g (after mktrim):", &g, "%4.1f", "" );
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// Free the objects.
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bli_obj_free( &norm1 );
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bli_obj_free( &normi );
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bli_obj_free( &normf );
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bli_obj_free( &x );
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bli_obj_free( &y );
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bli_obj_free( &a );
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bli_obj_free( &b );
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bli_obj_free( &c );
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bli_obj_free( &d );
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bli_obj_free( &e );
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bli_obj_free( &f );
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bli_obj_free( &g );
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return 0;
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}
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// -----------------------------------------------------------------------------
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