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rounding.hpp
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1/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2/*
3 * Main authors:
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7 * Christian Schulte, 2012
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33
34namespace Gecode { namespace Float {
35
38 RoundingBase::init();
39 }
42
45 return RoundingBase::median(x,y);
46 }
47
48#define GECODE_ROUND_OP(name) \
49 forceinline FloatNum \
50 Rounding::name##_down(FloatNum x, FloatNum y) { \
51 return RoundingBase::name##_down(x,y); \
52 } \
53 forceinline FloatNum \
54 Rounding::name##_up(FloatNum x, FloatNum y) { \
55 return RoundingBase::name##_up(x,y); \
56 }
57
62
63#undef GECODE_ROUND_OP
64
65#define GECODE_ROUND_FUN(name) \
66 forceinline FloatNum \
67 Rounding::name##_down(FloatNum x) { \
68 return RoundingBase::name##_down(x); \
69 } \
70 forceinline FloatNum \
71 Rounding::name##_up(FloatNum x) { \
72 return RoundingBase::name##_up(x); \
73 }
74
76
77#if defined(_M_X64) || defined(_M_IA64)
78
79 // Workaround as MSVC on x64 does not have a rint function
82 return floor(x);
83 }
86 return ceil(x);
87 }
88
89#else
90
92
93#endif
94
95#undef GECODE_ROUND_FUN
96
97}}
98
99// STATISTICS: float-var
100
~Rounding(void)
Destructor (restores previous rounding mode)
Definition rounding.hpp:41
FloatNum int_up(FloatNum x)
Return next upward-rounded integer of x (domain: )
FloatNum int_down(FloatNum x)
Return next downward-rounded integer of x (domain: )
FloatNum median(FloatNum x, FloatNum y)
Return median of x and y (domain: )
Definition rounding.hpp:44
Rounding(void)
Default constructor (configures full rounding mode)
Definition rounding.hpp:37
double FloatNum
Floating point number base type.
Definition float.hh:106
Gecode toplevel namespace
void div(Home home, FloatVar x0, FloatVar x1, FloatVar x2)
Post propagator for .
void sqrt(Home home, FloatVar x0, FloatVar x1)
Post propagator for .
Post propagator for SetVar SetOpType SetVar y
Definition set.hh:767
Post propagator for SetVar x
Definition set.hh:767
#define GECODE_ROUND_FUN(name)
Definition rounding.hpp:65
#define GECODE_ROUND_OP(name)
Definition rounding.hpp:48
#define forceinline
Definition config.hpp:187