Usage: ./mandelbrot [OPTION]...
       ./mandelbrot --help

A Mandelbrot and Julia set plotter.

Mandatory arguments to long options are mandatory for short options too.
Output parameters:
  -c SCHEME, --colour=SCHEME    Specify colour palette to use (default = Rainbow)
                                  SCHEME may be:
                                    0  = ASCII
                                    1  = Black and white
                                    2  = White and black
                                    3  = Greyscale
                                    4  = Rainbow
                                    5  = Vibrant rainbow
                                    6  = Red and white
                                    7  = Fire
                                    8  = Red hot
                                    9  = Matrix
                                  Black and white schemes are 1-bit
                                  Greyscale schemes are 8-bit
                                  Coloured schemes are full 24-bit
  -o FILE                       Output file name (default = 'var/mandelbrot.pnm')
  -r WIDTH,  --width=WIDTH      The width of the image file in pixels
                                  If using a 1-bit colour scheme, WIDTH must be a multiple of 8 to allow for
                                  bit-width pixels
  -s HEIGHT, --height=HEIGHT    The height of the image file in pixels
  -t                            Output to stdout (or, with -o, text file) using ASCII characters as shading
Distributed computing setup:
  -g ADDR,   --worker=ADDR       Have computer work for a master at the respective IP address
  -G COUNT,  --master=COUNT     Setup computer as a network master, expecting COUNT workers to connect
  -p PORT                       Communicate over the given port (default = 7939)
Plot type:
  -j CONST,  --julia=CONST      Plot Julia set with specified constant parameter
Plot parameters:
  -i NMAX,   --iterations=NMAX  The maximum number of function iterations before a number is deemed to be within the set
                                  A larger maximum leads to a preciser plot but increases computation time
  -m MIN,    --min=MIN          Minimum value to plot
  -M MAX,    --max=MAX          Maximum value to plot

  Default parameters (standard-precision):
    Julia Set:
      MIN        = -2 + -2i
      MAX        = 2 + 2i
      ITERATIONS = 100
      WIDTH      = 800
      HEIGHT     = 800

    Mandelbrot set:
      MIN        = -2 + -1.25i
      MAX        = 0.75 + 1.25i
      ITERATIONS = 100
      WIDTH      = 550
      HEIGHT     = 500

Optimisation:
  -A,        --multiple         Enable multiple-precision mode (default = 128 bits significand)
                                  MPFR floating-points will be used for calculations
                                  The precision is better than '-X', but will be considerably slower
             --precision=PREC   Specify number of bits to use for the MPFR significand (default = 128 bits)
  -T COUNT,  --threads=COUNT    Use COUNT number of processing threads (default = processor count)
  -X,        --extended         Extend precision (64 bits, compared to standard-precision 53 bits)
                                  The extended floating-point type will be used for calculations
                                  This will increase precision at high zoom but may be slower
  -z MEM,    --memory=MEM       Limit memory usage to MEM megabytes (default = 80% of free RAM)
Log settings:
             --log              Output log to file
                                  Without '--log-file', file defaults to var/mandelbrot.log
                                  Option may be used with '-v'
             --log-file=FILE    Specify filepath of log file (default = var/mandelbrot.log)
                                  Option may be used with '-v'
  -l LEVEL,  --log-level=LEVEL  Only log messages more severe than LEVEL (default = INFO)
                                  LEVEL may be:
                                    0  = NONE (log nothing)
                                    1  = FATAL
                                    2  = ERROR
                                    3  = WARNING
                                    4  = INFO
                                    5  = DEBUG
  -v,        --verbose          Redirect log to stderr

Miscellaneous:
             --help             Display this help message and exit

Examples:
  ./mandelbrot
  ./mandelbrot -j "0.1 - 0.2e-2i" -o "juliaset.pnm"
  ./mandelbrot -t
  ./mandelbrot -i 200 --width=5500 --height=5000 --colour=9
  ./mandelbrot -g 192.168.1.31 -p 1337
  ./mandelbrot -G 5 -p 1337 -A --precision=128 -r 33000 -s 30000 -x -1.749957,300