Merge branch 'fix/float-handling'

1 files changed, 50 insertions, 0 deletions

diff --git a/src/BitOps/FloatTraits.php b/src/BitOps/FloatTraits.php
new file mode 100644
index 0000000..dca9e18
--- /dev/null
+++ b/src/BitOps/FloatTraits.php
@@ -0,0 +1,50 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Nsfisis\Waddiwasi\BitOps;
+
+final readonly class FloatTraits
+{
+    public const int F32_EXPONENT_BITS = 8;
+    public const int F32_MANTISSA_BITS = 23;
+
+    public const int F32_SIGN_MASK = 0b10000000_00000000_00000000_00000000;
+    public const int F32_EXPONENT_MASK = 0b01111111_10000000_00000000_00000000;
+    public const int F32_MANTISSA_MASK = 0b00000000_01111111_11111111_11111111;
+
+    public const int F32_SIGN_UNSIGNED = 0;
+    public const int F32_SIGN_SIGNED = 0b10000000_00000000_00000000_00000000;
+    public const int F32_EXPONENT_NAN = 0b01111111_10000000_00000000_00000000;
+
+    public const int F64_EXPONENT_BITS = 11;
+    public const int F64_MANTISSA_BITS = 52;
+
+    public const int F64_SIGN_MASK = PHP_INT_MIN;
+    public const int F64_EXPONENT_MASK = 0b01111111_11110000_00000000_00000000_00000000_00000000_00000000_00000000;
+    public const int F64_MANTISSA_MASK = 0b00000000_00001111_11111111_11111111_11111111_11111111_11111111_11111111;
+
+    public const int F64_SIGN_UNSIGNED = 0;
+    public const int F64_SIGN_SIGNED = PHP_INT_MIN;
+    public const int F64_EXPONENT_NAN = 0b01111111_11110000_00000000_00000000_00000000_00000000_00000000_00000000;
+
+    private function __construct()
+    {
+    }
+
+    public static function getF32SignBit(Signedness $sign): int
+    {
+        return match ($sign) {
+            Signedness::Unsigned => self::F32_SIGN_UNSIGNED,
+            Signedness::Signed => self::F32_SIGN_SIGNED,
+        };
+    }
+
+    public static function getF64SignBit(Signedness $sign): int
+    {
+        return match ($sign) {
+            Signedness::Unsigned => self::F64_SIGN_UNSIGNED,
+            Signedness::Signed => self::F64_SIGN_SIGNED,
+        };
+    }
+}