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  /src/lib/libm/noieee_src/
n_atan2.c 181 double t,z,signy,signx,hi,lo; local in function:atan2
190 signy = copysign(one,y) ;
197 if(y==zero) return((signx==one)?y:copysign(PI,signy));
200 if(x==zero) return(copysign(PIo2,signy));
205 return(copysign((signx==one)?PIo4:3*PIo4,signy));
207 return(copysign((signx==one)?zero:PI,signy));
210 if(!finite(y)) return(copysign(PIo2,signy));
232 return (copysign((signx>zero)?t:PI-t,signy)); }
282 return(copysign((signx>zero)?z:PI-z,signy));

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