Library: Math - trigonometry (OMTRIG) legacy Include: omtrig.xin

Return type: OMX Returns:  The arc cosine of the floating point value.

Declaration

  define external float function
       acos value float x

A trigonometric function that calculates, in radians, the arc cosine (inverse cosine) of a floating point number. This 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: ;

  include "omtrig.xin"
  process
     local float x initial {0.567}
     local float acos-value
     set acos-value to acos x
     output "Arc cosine of x, where x = "
         || "d" % x
         || ", is "
         || "d" % acos-value
         || "%n"
  ; Output: "Arc cosine of x, where x = 0.567, is 0.967937080405776"

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

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