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IMSL_FRESNEL_COSINE

IMSL_FRESNEL_COSINE

The IMSL_FRESNEL_COSINE function evaluates the cosine Fresnel integral.



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

If present and nonzero, double precision is used.

Discussion


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

Version History


6.4
Introduced



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