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author | BobTheBob <32057864+BobTheBob9@users.noreply.github.com> | 2022-08-24 00:32:31 +0100 |
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committer | GeckoEidechse <gecko.eidechse+git@pm.me> | 2022-08-25 21:32:55 +0200 |
commit | 46bed8d09f32360377350d71816a76abdfbf2c7c (patch) | |
tree | 7feedae4910dbfe0e53d26ea1e00c4616d2c1850 /NorthstarDLL/bits.cpp | |
parent | a97f1f07bb5aa31629cd87023e09669eb4bf1fe9 (diff) | |
download | NorthstarLauncher-1.9.5-rc1.tar.gz NorthstarLauncher-1.9.5-rc1.zip |
Adjust folder structure (#242)v1.9.5-rc1v1.9.5
* Adjust folder structure
* change launcher directory name
Diffstat (limited to 'NorthstarDLL/bits.cpp')
-rw-r--r-- | NorthstarDLL/bits.cpp | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/NorthstarDLL/bits.cpp b/NorthstarDLL/bits.cpp new file mode 100644 index 00000000..014899f2 --- /dev/null +++ b/NorthstarDLL/bits.cpp @@ -0,0 +1,46 @@ +//=============================================================================// +// +// Purpose: look for NANs, infinities, and underflows. +// +//=============================================================================// + +#include "pch.h" +#include "bits.h" + +//----------------------------------------------------------------------------- +// This follows the ANSI/IEEE 754-1985 standard +//----------------------------------------------------------------------------- +unsigned long& FloatBits(float& f) +{ + return *reinterpret_cast<unsigned long*>(&f); +} + +unsigned long const& FloatBits(float const& f) +{ + return *reinterpret_cast<unsigned long const*>(&f); +} + +float BitsToFloat(unsigned long i) +{ + return *reinterpret_cast<float*>(&i); +} + +bool IsFinite(float f) +{ + return ((FloatBits(f) & 0x7F800000) != 0x7F800000); +} + +unsigned long FloatAbsBits(float f) +{ + return FloatBits(f) & 0x7FFFFFFF; +} + +float FloatMakePositive(float f) +{ + return fabsf(f); +} + +float FloatNegate(float f) +{ + return -f; // BitsToFloat( FloatBits(f) ^ 0x80000000 ); +} |