lgamma_r          132 include/ruby/missing.h RUBY_EXTERN double lgamma_r(double, int *);
lgamma_r          757 math.c             const double g = lgamma_r(d, sign);
lgamma_r          883 math.c             v = DBL2NUM(lgamma_r(d, &sign));
lgamma_r           35 missing/tgamma.c     d = lgamma_r(x, &sign);