coreboot-kgpe-d16/payloads/libpayload/libc
Julius Werner 96b00a50f1 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>
2020-07-09 00:32:11 +00:00
..
Makefile.inc libpayload: Add simple 32.32 fixed-point math API 2020-07-09 00:32:11 +00:00
args.c
console.c
coreboot.c
ctype.c
die.c
exec.c
fmap.c
fpmath.c libpayload: Add simple 32.32 fixed-point math API 2020-07-09 00:32:11 +00:00
getopt_long.c
hexdump.c
ipchecksum.c
lib.c
libgcc.c
malloc.c
memory.c
printf.c
qsort.c
rand.c
readline.c
string.c payloads/libpayload/libc: Avoid NULL pointer dereference 2020-05-28 09:34:37 +00:00
strlcpy.c
sysinfo.c
time.c