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Numeric double cast/comparison

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This commit is contained in:
Klaus Basan
2018-08-16 02:49:33 +02:00
parent 3a09749103
commit 660a1adb71
4 changed files with 31 additions and 24 deletions
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11
src/blackmisc/math/mathutils.h
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@@ -17,6 +17,7 @@
#include <QtCore/qmath.h>
#include <QPair>
#include <cmath>
#include <numeric>
namespace BlackMisc
{
@@ -56,8 +57,16 @@ namespace BlackMisc
//! Round by given epsilon
static double roundEpsilon(double value, double epsilon);
//! Epsilon safe equal
//! Epsilon safe equal @{
static bool epsilonEqual(double v1, double v2, double epsilon = 1E-06);
static bool epsilonEqualLimits(double v1, double v2) { return qAbs(v1 - v2) <= std::numeric_limits<double>::epsilon(); }
//! @}
//! Epsilon safe zero @{
static bool epsilonZero(double v, double epsilon) { return epsilonEqual(v, 0.0, epsilon); }
static bool epsilonZero(double v) { return epsilonEqual(v, 0.0, 1E-09); }
static inline bool epsilonZeroLimits(double v) { return qAbs(v) <= std::numeric_limits<double>::epsilon(); }
//! @}
//! Nearest integer not greater in magnitude than value, correcting for epsilon
static inline double trunc(double value, double epsilon = 1e-10)