84 lines
2.4 KiB
C
84 lines
2.4 KiB
C
/*=============================================================================
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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) 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, poly_reverse) (TEMPLATE(T, struct) * res,
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const TEMPLATE(T, struct) * poly, slong len,
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slong n, const TEMPLATE(T, ctx_t) ctx)
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{
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if (res == poly)
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{
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slong i;
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for (i = 0; i < n / 2; i++)
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{
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TEMPLATE(T, struct) t = res[i];
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res[i] = res[n - 1 - i];
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res[n - 1 - i] = t;
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}
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for (i = 0; i < n - len; i++)
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TEMPLATE(T, zero) (res + i, ctx);
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}
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else
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{
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slong i;
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for (i = 0; i < n - len; i++)
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TEMPLATE(T, zero) (res + i, ctx);
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for (i = 0; i < len; i++)
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TEMPLATE(T, set) (res + (n - len) + i, poly + (len - 1) - i, ctx);
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}
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}
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void
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TEMPLATE(T, poly_reverse) (TEMPLATE(T, poly_t) res,
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const TEMPLATE(T, poly_t) poly, slong n,
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const TEMPLATE(T, ctx_t) ctx)
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{
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slong len = FLINT_MIN(n, poly->length);
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if (len == 0)
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{
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TEMPLATE(T, poly_zero) (res, ctx);
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return;
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}
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TEMPLATE(T, poly_fit_length) (res, n, ctx);
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_TEMPLATE(T, poly_reverse) (res->coeffs, poly->coeffs, len, n, ctx);
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_TEMPLATE(T, poly_set_length) (res, n, ctx);
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_TEMPLATE(T, poly_normalise) (res, ctx);
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}
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#endif
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