**bisection**,
a C code which
applies the bisection method to seek a root of f(x)
over a change-of-sign interval a <= x <= b.

The computer code and data files made available on this web page are distributed under the MIT license.

**bisection** is available in
a C version and
a Fortran90 version and
a MATLAB version and
an Octave version and
a Python version and
an R version.

bisection_integer, a C code which seeks an integer solution to the equation f(x)=0, using bisection within a user-supplied change of sign interval [a,b].

bisection_rc, a C code which seeks a solution to the equation f(x)=0 using bisection within a user-supplied change of sign interval [a,b]. the procedure is written using reverse communication (RC).

fsolve, a C code which seeks the solution x of one or more nonlinear equations f(x)=0.

test_zero, a C code which implements test problems for the solution of a single nonlinear equation in one variable.

zero, a C code which seeks a solution of a scalar nonlinear equation f(x) = 0, by Richard Brent.

zero_rc, a C code which seeks solutions of a scalar nonlinear equation f(x) = 0, or a system of nonlinear equations, using reverse communication.

- bisection.c the source code.
- bisection.h the include file.
- bisection.sh compiles the source code.