diff options
Diffstat (limited to 'core/templates/hashfuncs.h')
| -rw-r--r-- | core/templates/hashfuncs.h | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/core/templates/hashfuncs.h b/core/templates/hashfuncs.h index 86bb1b5228..4572b269cf 100644 --- a/core/templates/hashfuncs.h +++ b/core/templates/hashfuncs.h @@ -5,8 +5,8 @@ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ -/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */ -/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */ +/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */ /* */ /* Permission is hereby granted, free of charge, to any person obtaining */ /* a copy of this software and associated documentation files (the */ @@ -114,6 +114,24 @@ static inline uint32_t make_uint32_t(T p_in) { return _u._u32; } +static inline uint64_t hash_djb2_one_float_64(double p_in, uint64_t p_prev = 5381) { + union { + double d; + uint64_t i; + } u; + + // Normalize +/- 0.0 and NaN values so they hash the same. + if (p_in == 0.0f) { + u.d = 0.0; + } else if (Math::is_nan(p_in)) { + u.d = Math_NAN; + } else { + u.d = p_in; + } + + return ((p_prev << 5) + p_prev) + u.i; +} + static inline uint64_t hash_djb2_one_64(uint64_t p_in, uint64_t p_prev = 5381) { return ((p_prev << 5) + p_prev) + p_in; } |