69 lines
2.0 KiB
C
69 lines
2.0 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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#include "fq_zech.h"
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void
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fq_zech_pow(fq_zech_t rop, const fq_zech_t op, const fmpz_t e,
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const fq_zech_ctx_t ctx)
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{
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if (fmpz_sgn(e) < 0)
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{
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flint_printf("Exception (fq_zech_pow). e < 0.\n");
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abort();
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}
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if (fmpz_is_zero(e))
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{
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fq_zech_one(rop, ctx);
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}
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else if (fq_zech_is_zero(op, ctx))
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{
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fq_zech_zero(rop, ctx);
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}
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else if (fmpz_is_one(e))
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{
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fq_zech_set(rop, op, ctx);
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}
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else
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{
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fmpz_t new_e;
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fmpz_init(new_e);
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fmpz_mul_ui(new_e, e, op->value);
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fmpz_mod_ui(new_e, new_e, ctx->qm1);
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rop->value = fmpz_get_ui(new_e);
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fmpz_clear(new_e);
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}
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}
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/* TODO: Move into separate function and optimize */
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void fq_zech_pow_ui(fq_zech_t rop, const fq_zech_t op,
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const ulong e, const fq_zech_ctx_t ctx)
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{
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fmpz_t exp;
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fmpz_init_set_ui(exp, e);
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fq_zech_pow(rop, op, exp, ctx);
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fmpz_clear(exp);
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}
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