/* mpf_get_ui -- mpf to ulong conversion */
Copyright 2001, 2002 Free Software Foundation, Inc.
This file is part of the GNU MP Library.
The GNU MP Library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version.
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
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/* Any fraction bits are truncated, meaning simply discarded.
For values bigger than a ulong, the low bits are returned (the low
absolute value bits actually), like mpz_get_ui, but this isn't
Notice this is equivalent to mpz_set_f + mpz_get_ui. */
mpf_get_ui (mpf_srcptr f)
mp_size_t size, abs_size;
size = SIZ (f);
if (size == 0)
/* fraction alone truncates to zero */
exp = EXP (f);
if (exp <= 0)
/* exponent bigger than available data means low limb zero */
abs_size = ABS (size);
if (exp > abs_size)
return (unsigned long) PTR(f)[abs_size-exp];