Chris Wood cwood1967
Alrecenk
/ fastexp.java
Last active
August 12, 2022 23:05
Very fast accurate approximation to Math.exp in java using floating point bit hacks.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| /* fast floating point exp function | |
| * must initialize table with buildexptable before using | |
| Based on | |
| A Fast, Compact Approximation of the Exponential Function | |
| Nicol N. Schraudolph 1999 | |
| Adapted to single precision to improve speed and added adjustment table to improve accuracy. | |
| Alrecenk 2014 |