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refactor into more fmpr helper functions

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Fredrik Johansson 2012-09-21 13:52:39 +02:00
parent a40b61c7f9
commit 2cfac2b7cb
1 changed files with 7 additions and 0 deletions
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7
doc/fmpr.txt
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@ -294,6 +294,13 @@ void fmpr_get_fmpz_2exp(fmpz_t man, fmpz_t exp, const fmpr_t x);
If x is zero, both man and exp are set to zero. If x is infinite or NaN,
the result is undefined.
int fmpr_get_fmpz_fixed_fmpz(fmpz_t y, const fmpr_t x, const fmpz_t e)
int fmpr_get_fmpz_fixed_si(fmpz_t y, const fmpr_t x, long e)
Converts x to a mantissa with predetermined exponent, i.e. computes
an integer y such that $y \times 2^e \approx x$, truncating if necessary.
Returns 0 if exact and 1 if truncation occurred.
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