Function: intfouriercos
Section: sums
C-Name: intfourcos0
Prototype: V=GGGEDGp
Help: intfouriercos(X=a,b,z,expr,{tab}): numerical integration from a to b
 of cos(2*Pi*z*X)*expr(X) from a to b, where a, b, and tab are as in intnum.
 This is the cosine-Fourier transform if a=-infty and b=+infty.
Wrapper: (,,,G)
Description:
  (gen,gen,gen,gen,?gen):gen:prec intfouriercos(${4 cookie}, ${4 wrapper}, $1, $2, $3, $5, prec)
Doc: numerical
 integration of $\var{expr}(X)\cos(2\pi zX)$ from $a$ to $b$, in other words
 Fourier cosine transform (from $a$ to $b$) of the function represented by
 \var{expr}. Endpoints $a$ and $b$ are coded as in \kbd{intnum}, and are not
 necessarily at infinity, but if they are, oscillations (i.e. $[[\pm1],\alpha
 I]$) are forbidden.

 \synt{intfouriercos}{void *E, GEN (*eval)(void*,GEN), GEN a, GEN b, GEN z, GEN tab, long prec}.