#include <math.h>
long double y1l(long double x);
long double y1l
The y1l() function is identical to y1(), except that the argument x and the return value is a long double.
See j0().
j0(), j0f(), j0l(), j1(), j1f(), j1l(), jn(), jnf(), jnl(), y0(), y0f(), y0l(), y1(), y1f(), yn(), ynf(), ynl()