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Added support for the final draft of the FPA standard (and fpa2bv conversion).

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Signed-off-by: Christoph M. Wintersteiger <cwinter@microsoft.com>
This commit is contained in:
Christoph M. Wintersteiger 2014-01-24 15:36:23 +00:00
parent b2be81fd4d
commit 0e74362ecb
12 changed files with 290 additions and 14 deletions
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4
src/util/mpf.cpp
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@ -1400,6 +1400,10 @@ mpf_exp_t mpf_manager::mk_max_exp(unsigned ebits) {
return m_mpz_manager.get_int64(m_powers2.m1(ebits-1, false));
}
mpf_exp_t mpf_manager::unbias_exp(unsigned ebits, mpf_exp_t biased_exponent) {
return biased_exponent - m_mpz_manager.get_int64(m_powers2.m1(ebits - 1, false));
}
void mpf_manager::mk_nzero(unsigned ebits, unsigned sbits, mpf & o) {
o.sbits = sbits;
o.ebits = ebits;

2
src/util/mpf.h
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@ -182,6 +182,8 @@ public:
mpf_exp_t mk_max_exp(unsigned ebits);
mpf_exp_t mk_min_exp(unsigned ebits);
mpf_exp_t unbias_exp(unsigned ebits, mpf_exp_t biased_exponent);
/**
\brief Return the biggest k s.t. 2^k <= a.