Alrecenk
/ fastexp.java
Last active
August 12, 2022 23:05
Very fast accurate approximation to Math.exp in java using floating point bit hacks.
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| /* 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 |