cpp/openttd-patchpack/source Changeset - r7828:725724eea20a

Changeset - r7828:725724eea20a

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truelight - 17 years ago 2007-11-04 18:28:52
truelight@openttd.org

(svn r11378) -Codechange: optimize KillFirstBit2x64 (skidd13)

1 file changed with 2 insertions and 9 deletions:

src/macros.h

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src/macros.h

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@@ @@ -416,21 +416,14 @@ Faster ( or at least cleaner ) implement @@
  * Clear the first bit in an integer.
+ *
  * This function returns a value where the first bit (from LSB)
  * is cleared. This function checks, similar to FindFirstBit2x64,
  * the bits at 0x3F3F.
  * is cleared. This function checks only the bits of 0x3F3F!
+ *
  * @param value The value to clear the first bit
  * @return The new value with the first bit cleared
  * @see KILL_FIRST_BIT
  * @see FindFirstBit2x64
  */
 static inline int KillFirstBit2x64(int value)
+{
 	if (GB(value, 0, 8) == 0) {
 		return KILL_FIRST_BIT(GB(value, 8, 6)) << 8;
 	} else {
 		return value & (KILL_FIRST_BIT(GB(value, 0, 6)) | 0x3F00);
+	}
 	return value &= (int)(value - 1) | 0x3FFFC0C0;
+}
 /**

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