Algorithm for Gauss-Legendre Integration

• Start.
• For given integration, input lower limit a, upper limit b.
• If (a=-1 && b=1)

For n-point formula,

where wi=w1,w2,w3,.... are weights

and

xi=x1,x2,x3,.... are respective points.

• Else

For n-point formula,

where wi=w1,w2,w3,.... are weights

and

zi=z1,z2,z3,.... are respective points same as xi.

c=(b-a)/2.

• Stop.

C Program for Gauss-Legendre Integration >>