diff options
| author | Alex Bennée <alex.bennee@linaro.org> | 2018-01-12 11:24:02 +0000 |
|---|---|---|
| committer | Alex Bennée <alex.bennee@linaro.org> | 2018-02-21 10:21:54 +0000 |
| commit | c13bb2da9eedfbc5886c8048df1bc1114b285fb0 (patch) | |
| tree | 06ddb15da5ae722dd67c9a9484b9741185146824 /include/fpu | |
| parent | 0c4c90929143a530730e2879204a55a30bf63758 (diff) | |
fpu/softfloat: re-factor sqrt
This is a little bit of a departure from softfloat's original approach
as we skip the estimate step in favour of a straight iteration. There
is a minor optimisation to avoid calculating more bits of precision
than we need however this still brings a performance drop, especially
for float64 operations.
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'include/fpu')
| -rw-r--r-- | include/fpu/softfloat.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h index cebe37b716..9b7b5e34e2 100644 --- a/include/fpu/softfloat.h +++ b/include/fpu/softfloat.h @@ -251,6 +251,7 @@ float16 float16_minnum(float16, float16, float_status *status); float16 float16_maxnum(float16, float16, float_status *status); float16 float16_minnummag(float16, float16, float_status *status); float16 float16_maxnummag(float16, float16, float_status *status); +float16 float16_sqrt(float16, float_status *status); int float16_compare(float16, float16, float_status *status); int float16_compare_quiet(float16, float16, float_status *status); |