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IMSL_FRESNEL_COSINE

IMSL_FRESNEL_COSINE

The IMSL_FRESNEL_COSINE function evaluates the cosine Fresnel integral.

This routine requires an IDL Advanced Math and Stats license. For more information, contact your sales or technical support representative.

The cosine Fresnel integral is defined to be:

Example


The Fresnel integral C(1.75) is evaluated.

PRINT, IMSL_FRESNEL_COSINE(1.75)
  0.321935

Syntax


Result = IMSL_FRESNEL_COSINE(X [, /DOUBLE])

Return Value


The value of the cosine Fresnel integral evaluated at X.

Arguments


X

Argument for which the function value is desired.

Keywords


DOUBLE (optional)

If present and nonzero, double precision is used.

Version History


6.4

Introduced

See Also


IMSL_FRESNEL_SINE



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