Library: Trigonometry (OMTRIG) Import: omtrig.xmd

Return type: opaque Returns: The arc sine of the floating point value.

Declaration

export external float function
     asin value float x

Use asin to calculate, in radians, the arc sine (inverse sine) of a floating point number. This trigonometric function works the same way as its equivalent in the C math library.

Out-of-range values, (|x| > 1), return "not a number" (NaN).

Example:

The following sample shows how to use asin to calculate the value of the arc sine of 0.999. The result is 1.526071239626164.

  import "omtrig.xmd" unprefixed
  import "omfloat.xmd" unprefixed
  process 
     local float x initial {0.999}
     output "The arc sine of x is " 
         || "d" % (asin x)
         || " %n"
  ; Output: "The arc sine of x is 1.526071239626164"

Other Library Functions acos asin atan atan2 cos cosh hypot sin sinh tan tanh

[ INDEX ] [ CONCEPTS ] [ TASKS ] [ SYNTAX ] [ LIBRARIES ] [ LEGACY LIBRARIES ] [ ERRORS ]