MPSolve options

The program unisolve allows several options on its command line. Here we report the main ones, a "*" in the following list denotes the default value. All options can be given through the web page.

• Goal: defines the main target of the computation
• * isolate the roots: -Gi
• approximate the roots: -Ga
• count the roots: -Gc

• Target set: chooses the set where roots are searched.
• * all the complex plane: -Sa
• left halfplane: -Sl
• right halfplane: -Sr
• upper halfplane: -Su
• lower halfplane (down): -Sd
• inside the unit disk: -Si
• outside the unit disk: -So
• real line: -SR
• imaginary line: -SI

• Automatic detection: extra targets
• detect real roots: -Dr
• detect imaginary roots: -Di
• detect both: -Db
• * do not detect: -Dn

• Multiplicity detection: enables or disables multiplicity detection
• detect multiplicity of roots: -M+
• * do not detect multiplicity: -M-

• Input/output precision: sets/overrides the input/output precision
• number of maximum output digits of the roots -o# where # is the number of digits (* the default is 30)
• number of input digits of the coefficients (override the file info) -i# where # is the number of digits

• Output format: specifies the way MPSolve outputs its results
• * compact form: (re, im): -Oc
• bare format: re \tab im: -Ob
• "Gnuplot" low precision: re  im: -Og
• verbose: Root(i) = re + I im: -Ov
• full: roots, error and status: -Of
• the roots are written integrally with no filtering of the correct digits,
• a guaranteed absolute error bound is provided,
• the status of each root is displayed.

• Debug: write auxiliary runtime information
• to the standard error stream: -d
• to the standard output: -d1

• Parameters: allows to change the MPSolve internal parameters (see the file mpsolve.tex for more information)
• maximum number of packet iterations: -Lp#
• maximum number of global iterations: -Li#

Examples:

unisolve -o1000 -Ga -SR   my_poly

unisolve -o100000 -Gc -Si   my_poly  > result