Release calc version 2.10.2t30

help/asin

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+NAME
+    asin - inverse trigonometric sine
+
+SYNOPSIS
+    asin(x [,eps])
+
+TYPES
+    x		real, -1 <= x <= 1
+    eps		nonzero real, defaults to epsilon()
+
+    return	real
+
+DESCRIPTION
+    Returns the asin of x to a multiple of eps with error less in
+    absolute value than .75 * eps.
+
+    v = asin(x) is the number in [-p1/2, pi/2] for which sin(v) = x.
+
+EXAMPLE
+    > print asin(.5, 1e-5), asin(.5, 1e-10), asin(.5, 1e-15), asin(.5, 1e-20)
+    .5236 .5235987756 .523598775598299 .52359877559829887308
+
+LIMITS
+    unlike sin and cos, x must be real
+    abs(x) <= 1
+    eps > 0
+
+LIBRARY
+    NUMBER *qasin(NUMBER *q, NUMBER *epsilon)
+
+SEE ALSO
+    acos, atan, asec, acsc, acot, epsilon