56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
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/*=============================================================================
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This file is part of FLINT.
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FLINT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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FLINT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FLINT; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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=============================================================================*/
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/******************************************************************************
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Copyright (C) 2010 Fredrik Johansson
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Copyright (C) 2013 Mike Hansen
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******************************************************************************/
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#ifdef T
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#include "templates.h"
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void
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TEMPLATE(T, mat_randrank) (TEMPLATE(T, mat_t) mat, flint_rand_t state,
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slong rank, const TEMPLATE(T, ctx_t) ctx)
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{
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slong i;
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TEMPLATE(T, struct) * diag;
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if (rank < 0 || rank > mat->r || rank > mat->c)
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{
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printf("Exception (nmod_mat_randrank). Impossible rank.\n");
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abort();
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}
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diag = _TEMPLATE(T, vec_init) (rank, ctx);
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for (i = 0; i < rank; i++)
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TEMPLATE(T, randtest_not_zero) (diag + i, state, ctx);
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TEMPLATE(T, mat_randpermdiag) (mat, state, diag, rank, ctx);
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_TEMPLATE(T, vec_clear) (diag, rank, ctx);
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}
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#endif
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