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<B>FRESNEL_S</B> _ _ _  _ _ _  _ _ _  _ _ _ <B>operator</B><P>
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The <em>Fresnel_S</em> operator represents Fresnel's Sine Integral function. 
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syntax: </H3>
<em>Fresnel_S</em>(&lt;expression&gt;) 
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examples: </H3>
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int(sin(t^2*pi/2),t,0,x); 

  fresnel_s(x) 


on rounded; 

fresnel_s(2.1); 

  0.374273359378

</TT></PRE><P>The operator <em>Fresnel_S</em> has a limited numeric evaluation o
f 
large values of its argument. 
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