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improve pow with e = 1/2

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This commit is contained in:
Fredrik Johansson 2012-09-17 00:06:03 +02:00
parent 1b947fe4c4
commit 632315c608
1 changed files with 5 additions and 0 deletions
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5
fmprb/pow.c
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@ -105,6 +105,11 @@ fmprb_pow_fmpq(fmprb_t y, const fmprb_t x, const fmpq_t a, long prec)
{
fmprb_pow_fmpz(y, x, fmpq_numref(a), prec);
}
/* TODO: generalize this to a = p/q for any small p, q */
else if (fmpz_is_one(fmpq_numref(a)) && fmpz_cmp_ui(fmpq_denref(a), 2) == 0)
{
fmprb_sqrt(y, x, prec);
}
else
{
long wp;