| commit | d28cd0ad428d63c186003fdf9c02470561650a04 | |
| author | Szabolcs Nagy <nsz@port70.net> | |
| Sun, 22 Oct 2017 18:32:47 +0000 (22 18:32 +0000) | ||
| committer | Rich Felker <dalias@aerifal.cx> | |
| Thu, 18 Apr 2019 03:44:01 +0000 (17 23:44 -0400) | ||
| tree | 730d1899c26c3e6542d7937b496559c9485174d3 | treesnapshot (tar.gz zip) |
| parent | 3f94c648ef32c95fa7f5c94b5cb8f2b764fc1938 | commitdiff |
math: new powf
from https://github.com/ARM-software/optimized-routines,
commit 04884bd04eac4b251da4026900010ea7d8850edc
POWF_SCALE != 1.0 case only matters if TOINT_INTRINSICS is set, which
is currently not supported for any target.
SNaN is not supported, it would require an issignalingf
implementation.
code size change: -816 bytes.
benchmark on x86_64 before, after, speedup:
-Os:
powf rthruput: 95.14 ns/call 20.04 ns/call 4.75x
powf latency: 137.00 ns/call 34.98 ns/call 3.92x
-O3:
powf rthruput: 92.48 ns/call 13.67 ns/call 6.77x
powf latency: 131.11 ns/call 35.15 ns/call 3.73x
from https://github.com/ARM-software/optimized-routines,
commit 04884bd04eac4b251da4026900010ea7d8850edc
POWF_SCALE != 1.0 case only matters if TOINT_INTRINSICS is set, which
is currently not supported for any target.
SNaN is not supported, it would require an issignalingf
implementation.
code size change: -816 bytes.
benchmark on x86_64 before, after, speedup:
-Os:
powf rthruput: 95.14 ns/call 20.04 ns/call 4.75x
powf latency: 137.00 ns/call 34.98 ns/call 3.92x
-O3:
powf rthruput: 92.48 ns/call 13.67 ns/call 6.77x
powf latency: 131.11 ns/call 35.15 ns/call 3.73x
| src/internal/libm.h | diffblobblamehistory | |
| src/math/powf.c | diffblobblamehistory | |
| src/math/powf_data.c | [new file with mode: 0644] | blob |
| src/math/powf_data.h | [new file with mode: 0644] | blob |