mirrors/riiablo
1
0
Fork 0
mirror of https://github.com/collinsmith/riiablo.git synced 2025-07-04 15:27:30 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

Improved Fixed utils

Browse Source 
Made class final
Changed from bit shift to lookup table
This commit is contained in:
Collin Smith
2020-09-08 13:01:51 -07:00
parent 73e1be417a
commit f45168a133
1 changed files with 13 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
core/src/com/riiablo/attributes/Fixed.java
View File

@ -1,17 +1,24 @@
package com.riiablo.attributes;
public class Fixed {
public static int floatToIntBits(float value, int precision) {
return (int) (value * (1 << precision));
public final class Fixed {
private static final int[] DIVISOR = new int[Integer.SIZE];
static {
for (int i = 0; i < Integer.SIZE; i++) {
DIVISOR[i] = 1 << i;
}
}
public static float intBitsToFloat(int value, int precision) {
final int pow2 = (1 << precision);
public static int floatToIntBits(final float value, final int precision) {
return (int) (value * DIVISOR[precision]);
}
public static float intBitsToFloat(final int value, final int precision) {
final int pow2 = DIVISOR[precision];
final int mask = pow2 - 1;
return ((value >>> precision) + ((value & mask) / (float) pow2));
}
public static int intBitsToFloatFloor(int value, int precision) {
public static int intBitsToFloatFloor(final int value, final int precision) {
return value >>> precision;
}