Numerical integration/Gauss-Legendre Quadrature: Difference between revisions
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(x != x1 is definitely a no-no and not well behaved on some systems) |
(Adjust epsilon) |
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x1 = x; |
x1 = x; |
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x -= lege_eval(N, x) / lege_diff(N, x); |
x -= lege_eval(N, x) / lege_diff(N, x); |
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} while ( fdim( x, x1) > |
} while ( fdim( x, x1) > 2e-16 ); |
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/* fdim( ) was introduced in C99, if it isn't available |
/* fdim( ) was introduced in C99, if it isn't available |
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* on your system, try fabs( ) */ |
* on your system, try fabs( ) */ |
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