Lines Matching defs:acos
35 // To compute acos(s), separate schemes are used when s is in different
40 // acos(s)=pi/2-asin(t)-asin(r), where r=s*sqrt(1-t^2)-t*sqrt(1-s^2)
51 // acos(|s|)=asin(t)-asin(r), r=s*t-sqrt(1-s^2)*sqrt(1-t^2)
52 // acos(-|s|)=pi-acos(|s|)
59 // |s|<2^{-4}: acos(s)=pi/2-asin(s)
62 // |s| in [255/256,1): acos(|s|)=2*asin(q), where q=sqrt((1-|s|)/2)
66 // acos(-|s|)=pi-acos(|s|)
71 // acos(NaN) = quiet NaN, and raise invalid exception
72 // acos(INF) = QNaN and raise invalid exception
73 // acos(x) = QNaN and raise invalid exception, for |x|>1.0
74 // acos(1) = +0
79 # -- Begin acos
80 ENTRY(acos)
361 END(acos)
362 # -- End acos