diff options
Diffstat (limited to 'src/BitOps/FloatOps.php')
| -rw-r--r-- | src/BitOps/FloatOps.php | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/BitOps/FloatOps.php b/src/BitOps/FloatOps.php new file mode 100644 index 0000000..cb6cbc4 --- /dev/null +++ b/src/BitOps/FloatOps.php @@ -0,0 +1,40 @@ +<?php + +declare(strict_types=1); + +namespace Nsfisis\Waddiwasi\BitOps; + +final readonly class FloatOps +{ + private function __construct() + { + } + + /** + * @return array{int, int, int} + */ + public static function destructF64Bits(float $x): array + { + $i = BinaryConversion::deserializeS64(BinaryConversion::serializeF64($x)); + return [ + $i & FloatTraits::F64_SIGN_MASK, + $i & FloatTraits::F64_EXPONENT_MASK, + $i & FloatTraits::F64_MANTISSA_MASK, + ]; + } + + public static function constructNan(Signedness $sign, float $x): float + { + [, , $payload] = self::destructF64Bits($x); + $i = 0 | + FloatTraits::getF64SignBit($sign) | + FloatTraits::F64_EXPONENT_NAN | + $payload; + return BinaryConversion::deserializeF64(BinaryConversion::serializeI64($i)); + } + + public static function getSignedness(float $x): Signedness + { + return self::destructF64Bits($x)[0] === 0 ? Signedness::Unsigned : Signedness::Signed; + } +} |
