Complex.ASinReal (gb.gsl)
Static Function ASinReal ( X As Float ) As Complex
 
Return the complex arcsine of the real number 
X.
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For X between -1 and 1, the function returns a real value in the range [-π/2,π/2].
 
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For X less than -1 the result has a real part of -π/2 and a positive imaginary part.
 
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For X greater than 1 the result has a real part of π/2 and a negative imaginary part.