PlaneteCasio/libc - Forge de Planète Casio

Commit Graph

Author	SHA1	Message	Date
Szabolcs Nagy	f92a4c5d2d	Document the log table generation method Add comments with enough detail so the log lookup tables can be recreated.	2018-09-06 13:34:13 +02:00
Szabolcs Nagy	b99d49e506	New pow implementation The new implementation is provided under !__OBSOLETE_MATH, it uses ISO C99 code. With default settings the worst case error in nearest rounding mode is 0.54 ULP with inlined fma and fma contraction. It uses a 4 KB lookup table in addition to the table in exp_data.c, on aarch64 .text+.rodata size of libm.a is increased by 2295 bytes. Improvements on Cortex-A72: latency: 3.3x thruput: 4.9x	2018-06-27 15:40:49 +02:00

Author

SHA1

Message

Date

Szabolcs Nagy

f92a4c5d2d

Document the log table generation method

Add comments with enough detail so the log lookup tables can be recreated.

2018-09-06 13:34:13 +02:00

Szabolcs Nagy

b99d49e506

New pow implementation

The new implementation is provided under !__OBSOLETE_MATH, it uses
ISO C99 code.  With default settings the worst case error in nearest
rounding mode is 0.54 ULP with inlined fma and fma contraction.  It uses
a 4 KB lookup table in addition to the table in exp_data.c, on aarch64
.text+.rodata size of libm.a is increased by 2295 bytes.

Improvements on Cortex-A72:
latency: 3.3x
thruput: 4.9x

2018-06-27 15:40:49 +02:00

2 Commits