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comparisons for MP_Float

This commit is contained in:
Marc Glisse 2020-05-17 11:42:10 +02:00
parent 8b79068a12
commit a7ccc80f18
1 changed files with 22 additions and 25 deletions
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47
Number_types/include/CGAL/MP_Float.h
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@ -27,6 +27,7 @@
#include <iostream>
#include <vector>
#include <algorithm>
#include <boost/operators.hpp>
// MP_Float : multiprecision scaled integers.
@ -106,7 +107,13 @@ MP_Float operator*(const MP_Float &a, const MP_Float &b);
MP_Float operator%(const MP_Float &a, const MP_Float &b);
class MP_Float
class MP_Float : boost::totally_ordered1<MP_Float
#ifdef _MSC_VER
, boost::equality_comparable2<MP_Float, int
, boost::equality_comparable2<MP_Float, double
> >
#endif
>
{
public:
typedef short limb;
@ -223,6 +230,20 @@ public:
MP_Float& operator*=(const MP_Float &a) { return *this = *this * a; }
MP_Float& operator%=(const MP_Float &a) { return *this = *this % a; }
friend bool operator<(const MP_Float &a, const MP_Float &b)
{ return INTERN_MP_FLOAT::compare(a, b) == SMALLER; }
friend bool operator==(const MP_Float &a, const MP_Float &b)
{ return (a.v == b.v) && (a.v.empty() || (a.exp == b.exp)); }
#ifdef _MSC_VER
// Needed because without /permissive-, it makes hidden friends visible (operator== from Quotient)
friend bool operator==(const MP_Float &a, int b)
{ return a == MP_Float(b); }
friend bool operator==(const MP_Float &a, double b)
{ return a == MP_Float(b); }
#endif
exponent_type max_exp() const
{
return exponent_type(v.size()) + exp;
@ -365,30 +386,6 @@ inline
void swap(MP_Float &m, MP_Float &n)
{ m.swap(n); }
inline
bool operator<(const MP_Float &a, const MP_Float &b)
{ return INTERN_MP_FLOAT::compare(a, b) == SMALLER; }
inline
bool operator>(const MP_Float &a, const MP_Float &b)
{ return b < a; }
inline
bool operator>=(const MP_Float &a, const MP_Float &b)
{ return ! (a < b); }
inline
bool operator<=(const MP_Float &a, const MP_Float &b)
{ return ! (a > b); }
inline
bool operator==(const MP_Float &a, const MP_Float &b)
{ return (a.v == b.v) && (a.v.empty() || (a.exp == b.exp)); }
inline
bool operator!=(const MP_Float &a, const MP_Float &b)
{ return ! (a == b); }
MP_Float
approximate_sqrt(const MP_Float &d);