47 lines
2.1 KiB
C
47 lines
2.1 KiB
C
/*
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Copyright (C) 2005-2006 Feeling Software Inc.
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MIT License: http://www.opensource.org/licenses/mit-license.php
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*/
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/**
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@file FMFloat.h
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The file containing functions and constants for floating point values.
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*/
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#ifdef WIN32
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#include <float.h>
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#endif
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/** The default tolerance for double-sized floating-point comparison functions. */
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#define DBL_TOLERANCE 0.0001
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/** The default tolerance for single-sized floating-point comparison functions. */
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#define FLT_TOLERANCE 0.0001f
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/** A dynamically-sized array of double-sized floating-point values. */
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typedef vector<double> DoubleList;
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/** A dynamically-sized array of floating-point values. */
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typedef vector<float> FloatList;
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/** Returns whether two floating-point values are equivalent within a given tolerance.
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@param f1 A first floating-point value.
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@param f2 A second floating-point value. */
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inline bool IsEquivalent(float f1, float f2) { return f1 - f2 < FLT_TOLERANCE && f2 - f1 < FLT_TOLERANCE; }
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/** Returns whether two floating-point values are equivalent within a given tolerance.
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@param f1 A first floating-point value.
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@param f2 A second floating-point value.
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@param tolerance The tolerance in which to accept the two floating-point values as equivalent. */
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inline bool IsEquivalent(float f1, float f2, float tolerance) { return f1 - f2 < tolerance && f2 - f1 < tolerance; }
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/** Returns whether two double-sized floating-point values are equivalent.
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@param f1 A first double-sized floating-point value.
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@param f2 A second double-sized floating-point value. */
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inline bool IsEquivalent(double f1, double f2) { return f1 - f2 < DBL_TOLERANCE && f2 - f1 < DBL_TOLERANCE; }
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/** Returns whether two double-sized floating-point values are equivalent within a given tolerance.
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@param f1 A first double-sized floating-point value.
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@param f2 A second double-sized floating-point value.
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@param tolerance The tolerance in which to accept the two double-sized floating-point values as equivalent. */
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inline bool IsEquivalent(double f1, double f2, double tolerance) { return f1 - f2 < tolerance && f2 - f1 < tolerance; }
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