diff options
| author | Julius Werner <jwerner@chromium.org> | 2020-07-01 19:18:34 -0700 |
|---|---|---|
| committer | Julius Werner <jwerner@chromium.org> | 2020-07-09 00:32:11 +0000 |
| commit | 96b00a50f14e3e41eaf69171945ceeb587b4fe0b (patch) | |
| tree | e6fb5915dead4c50130fd38977e8830a0fd0d52f /payloads/libpayload/libc/Makefile.inc | |
| parent | 56b2550316327efa38d3755128ea8652b1253efb (diff) | |
libpayload: Add simple 32.32 fixed-point math API
struct fraction is slooooooooooow. This patch adds a simple 64-bit
(32-bits integral, 32-bits fractional) fixed-point math API that is
*much* faster (observed roughly 5x speed-up) when doing intensive
graphics operations. It is optimized for speed over accuracy so some
operations may lose a bit more precision than expected, but overall it's
still plenty of bits for most use cases.
Also includes support for basic trigonometric functions with a small
lookup table.
Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: Id0f9c23980e36ce0ac0b7c5cd0bc66153bca1fd0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42993
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Diffstat (limited to 'payloads/libpayload/libc/Makefile.inc')
| -rw-r--r-- | payloads/libpayload/libc/Makefile.inc | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/payloads/libpayload/libc/Makefile.inc b/payloads/libpayload/libc/Makefile.inc index 2999023da8..f9006ae471 100644 --- a/payloads/libpayload/libc/Makefile.inc +++ b/payloads/libpayload/libc/Makefile.inc @@ -38,3 +38,4 @@ libc-$(CONFIG_LP_LIBC) += hexdump.c libc-$(CONFIG_LP_LIBC) += die.c libc-$(CONFIG_LP_LIBC) += coreboot.c libc-$(CONFIG_LP_LIBC) += fmap.c +libc-$(CONFIG_LP_LIBC) += fpmath.c |