2 acsc - inverse trigonometric cosecant
8 x real, with absolute value >= 1
9 eps nonzero real, defaults to epsilon()
14 Returns the acsc of x to a multiple of eps with error less in
15 absolute value than .75 * eps.
17 v = acsc(x) is the number in [-pi/2, pi/2] for which csc(v) = x.
20 > print acsc(2, 1e-5), acsc(2, 1e-10), acsc(2, 1e-15), acsc(2, 1e-20)
21 .5236 .5235987756 .523598775598299 .52359877559829887308
27 NUMBER *qacsc(NUMBER *x, NUMBER *eps)
30 asin, acos, atan, asec, acot, epsilon