mirrors/ladybird
0
0
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2025-05-09 12:42:54 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 9

LibM: Implement sqrt()

Browse source 
Use the x87 fsqrt instruction for that.

We cannot use __builtin_sqrt(), since GCC expands it into
a sqrt() call, so we just loop endlessly.
This commit is contained in:
Sergey Bugaev 2019-08-09 23:23:01 +03:00 • committed by Andreas Kling
parent 0a061d4314
commit cfe8fdd5aa
Notes: sideshowbarker 2024-07-19 12:47:28 +09:00
1 changed files with 4 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

6
Libraries/LibM/math.cpp
View file

@ -58,9 +58,11 @@ double tan(double angle)
return ampsin(angle) / ampsin(M_PI_2 + angle); return ampsin(angle) / ampsin(M_PI_2 + angle);
} }
double sqrt(double) double sqrt(double x)
{ {
ASSERT_NOT_REACHED(); double res;
__asm__("fsqrt" : "=t"(res) : "0"(x));
return res;
} }
double sinh(double) double sinh(double)