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#include <complex.h> // for complex, cabsl, cimagl, clogl, creall, I
#include <math.h> // for atan2l, logl
long double complex clogl(long double complex z)
{
long double p, rr;
rr = cabsl(z);
p = logl(rr);
rr = atan2l(cimagl(z), creall(z));
return p + rr * (long double complex)I;
}
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