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Optimize quad_sqrt masking

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This commit is contained in:
Kp 2015-02-01 23:07:18 +00:00
parent 6c857b038d
commit cf4a36aeff
1 changed files with 10 additions and 6 deletions
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16
common/maths/fixc.cpp
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@ -102,12 +102,16 @@ u_int32_t quad_sqrt(const quadint iq)
if (high==0 && (int32_t)low>=0)
return long_sqrt((int32_t)low);
if (high & 0xff000000) {
cnt=12+16; i = high >> 24;
} else if (high & 0xff0000) {
cnt=8+16; i = high >> 16;
} else if (high & 0xff00) {
cnt=4+16; i = high >> 8;
if ((i = high >> 24)) {
cnt=12+16;
}
else if ((i = high >> 16))
{
cnt=8+16;
}
else if ((i = high >> 8))
{
cnt=4+16;
} else {
cnt=0+16; i = high;
}