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Diffstat (limited to 'core/math/math_funcs.h')
| -rw-r--r-- | core/math/math_funcs.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/core/math/math_funcs.h b/core/math/math_funcs.h index ec0ed39471..24081528f0 100644 --- a/core/math/math_funcs.h +++ b/core/math/math_funcs.h @@ -96,6 +96,15 @@ public: static double random(double from, double to); + static _FORCE_INLINE_ bool isequal_approx(real_t a, real_t b) { + // TODO: Comparing floats for approximate-equality is non-trivial. + // Using epsilon should cover the typical cases in Godot (where a == b is used to compare two reals), such as matrix and vector comparison operators. + // A proper implementation in terms of ULPs should eventually replace the contents of this function. + // See https://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/ for details. + + return abs(a-b) < CMP_EPSILON; + } + static _FORCE_INLINE_ real_t abs(real_t g) { |