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# Mark Holmes

Last seen: 20 days ago Active since 2010

Professional Interests: applied math

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tic/toc versus time.perf_counter_ns()
For tic/toc the documentation indicates that these are limited to codes that take at least 1/10 second (if you want an accurate ...

6 months ago | 1 answer | 0

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Submitted

conserve.m
Energy conserving IVP solver

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fits(f,xd,yd,p0,n,m)
Data fitting given model function f(x,p)

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splineA(xd,yd,x,Ends,Ders)
Nonuniform Cubic Spline Interpolation

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splineB(xd,yd,Ends,Ders)
Coefficients of the Cubics For Nonuniform Cubic Spline Interpolation

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solve(f,a,b)
Solves, if possible, f(x)=0.

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cgm(A,b)
Solves Ax=b using the conjugate gradient method.

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nde.m
solves the nonlinear diffusion equation u_t = Du_xx + f(x,t,u,u_x)

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nbvp.m
A simple solver for a 2nd order nonlinear BVP

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Draws an arrowhead given two points.

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cgmS(C,b)
Solves Ax=b using the conjugate gradient method when A is sparse.

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int(f,a,b)
This program computes the integral of f(x) from x=a to x=b using an adaptive Simpson's rule.

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tridiag.m
tridiagonal matrix equation solver (Thomas algorithm)

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sbvp.m
A simple code to solve nonlinear BVPs with layers