ATANH_COEFF_9     107 maint/gnulib/lib/log1p.c #define ATANH_COEFF_9  0.1111111111111111111111111111111111111113
ATANH_COEFF_9     117 maint/gnulib/lib/log1pl.c #define ATANH_COEFF_9  0.1111111111111111111111111111111111111113L