PlaneteCasio/libc - Forge de Planète Casio

Commit Graph

Author	SHA1	Message	Date
Wilco Dijkstra	71e187bc07	Update Arm copyright notices in new math files While working on the strstr patch I noticed several copyright headers of the new math functions are missing closing quotes after ``AS IS. I've added these. Also update spellings of Arm Ltd in a few places (but still use ARM LTD in upper case portion). Finally add SPDX identifiers to make everything consistent.	2018-09-28 11:03:55 +01:00
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

Wilco Dijkstra

71e187bc07

Update Arm copyright notices in new math files

While working on the strstr patch I noticed several copyright headers
of the new math functions are missing closing quotes after ``AS IS.
I've added these.  Also update spellings of Arm Ltd in a few places
(but still use ARM LTD in upper case portion).  Finally add SPDX
identifiers to make everything consistent.

2018-09-28 11:03:55 +01:00

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

3 Commits