diff options
Diffstat (limited to 'src/util/rational_gmp_imp.h')
| -rw-r--r-- | src/util/rational_gmp_imp.h | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/src/util/rational_gmp_imp.h b/src/util/rational_gmp_imp.h index 02ccc273c..273b3072d 100644 --- a/src/util/rational_gmp_imp.h +++ b/src/util/rational_gmp_imp.h @@ -28,6 +28,11 @@ namespace CVC4 { +class CVC4_PUBLIC RationalFromDoubleException : public Exception { +public: + RationalFromDoubleException(double d) throw(); +}; + /** ** A multi-precision rational constant. ** This stores the rational as a pair of multi-precision integers, @@ -172,12 +177,7 @@ public: return Integer(d_value.get_den()); } - /** Return an exact rational for a double d. */ - static Rational fromDouble(double d){ - Rational q; - mpq_set_d(q.d_value.get_mpq_t(), d); - return q; - } + static Rational fromDouble(double d) throw(RationalFromDoubleException); /** * Get a double representation of this Rational, which is @@ -234,6 +234,10 @@ public: return Integer(q); } + Rational floor_frac() const { + return (*this) - Rational(floor()); + } + Rational& operator=(const Rational& x){ if(this == &x) return *this; d_value = x.d_value; @@ -326,6 +330,10 @@ public: uint32_t denLen = getDenominator().length(); return numLen + denLen; } + + /** Equivalent to calling (this->abs()).cmp(b.abs()) */ + int absCmp(const Rational& q) const; + };/* class Rational */ struct RationalHashFunction { |