Source code:
Introduction to Numerical Analysis 2nd Edition F.B. Hildebrand [1987]
many sanity: Milton Abramowitz and Irene A. Stegun
Legendre is the principal Quadrature in practical Engineering works.
BTW, if you have higher Legendre than given 63/64, welcome to add/attach.
Thanks Andrey for your Polyroots Smath Examples
Jean

Maths Polyroots Rodrigues Wr.sm (13,45 KiB) scaricato 1361 volta(e).
Maths Polyroots Hermite Wr SPECIFIC.sm (20,06 KiB) scaricato 1421 volta(e).
Maths Polyroots Radau Wr.sm (28,65 KiB) scaricato 1405 volta(e).
Maths Polyroots Jacobi Wr.sm (19,23 KiB) scaricato 1332 volta(e).
Maths Polyroots Laguerre Wr.sm (31,96 KiB) scaricato 1351 volta(e).
Maths Polyroots Lobatto Wr.sm (48,38 KiB) scaricato 1358 volta(e).
Maths Polyroots ChebyShev Wr.sm (97,91 KiB) scaricato 1367 volta(e).
Maths Polyroots Hermite Wr.sm (97,52 KiB) scaricato 1385 volta(e).
Maths Polyroots Legendre Wr.sm (206,12 KiB) scaricato 1388 volta(e).