Swiftdiff options
| author | dknn <yoann.blein@free.fr> | 2012-08-17 14:51:37 (GMT) |
|---|---|---|
| committer | dknn <yoann.blein@free.fr> | 2012-09-22 09:32:53 (GMT) |
| commit | c8ced8597ab28b928862d21554c0a68c238b1165 (patch) | |
| tree | 360bc3b3b10afcde3d8cef2558bbec68783285dd /Swiften/Base/FloatCompare.cpp | |
| parent | 65f6d936741cd4487de1b469a5db39fb4fdccf07 (diff) | |
| download | swift-contrib-c8ced8597ab28b928862d21554c0a68c238b1165.zip swift-contrib-c8ced8597ab28b928862d21554c0a68c238b1165.tar.bz2 | |
Move float comparison functions to cpp
Diffstat (limited to 'Swiften/Base/FloatCompare.cpp')
| -rw-r--r-- | Swiften/Base/FloatCompare.cpp | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/Swiften/Base/FloatCompare.cpp b/Swiften/Base/FloatCompare.cpp new file mode 100644 index 0000000..ecf11c2 --- /dev/null +++ b/Swiften/Base/FloatCompare.cpp @@ -0,0 +1,28 @@ +/* + * Copyright (c) 2012 Yoann Blein + * Licensed under the simplified BSD license. + * See Documentation/Licenses/BSD-simplified.txt for more information. + */ + +#include <cmath> + +namespace Swift { + +bool approximatelyEqual(float a, float b, float epsilon) { + return std::fabs(a - b) <= ( (std::fabs(a) < std::fabs(b) ? std::fabs(b) : std::fabs(a)) * epsilon); +} + +bool essentiallyEqual(float a, float b, float epsilon) { + return std::fabs(a - b) <= ( (std::fabs(a) > std::fabs(b) ? std::fabs(b) : std::fabs(a)) * epsilon); +} + +bool definitelyGreaterThan(float a, float b, float epsilon) { + return (a - b) > ( (std::fabs(a) < std::fabs(b) ? std::fabs(b) : std::fabs(a)) * epsilon); +} + +bool definitelyLessThan(float a, float b, float epsilon) { + return (b - a) > ( (std::fabs(a) < std::fabs(b) ? std::fabs(b) : std::fabs(a)) * epsilon); +} + +} + |