Read-Only Globals

ANA

16.2: Read-Only Global Variables

The following variables offer certain physical and mathematical constants, and also some constants specific to ANA. These variables are read-only: They may be used in expressions, but cannot be changed. These variables are also global: They are recognized everywhere, including inside subroutines and functions.

#0 Zero

#1 One

#2PI Two pi

#42 The answer to Life, Universe, and Everything

#C Speed of light (cgs)

#CLASS ANA classes structure

#COL Number of columns on the terminal

#COORDSYS ANA coordinate systems structure

#DEG Degrees to radians

#D.R Degrees to radians

#E Base of natural logarithm

#EC Electron charge (cgs)

#EVENT ANA events structure

#FILETYPE Data file types

#G Gravitational constant (cgs)

#H Planck constant (cgs)

#HB Planck constant divided by pi (cgs)

#I Imaginary unit

#INFTY Infinity

#K Boltzmann constant (cgs)

#M Electron mass (cgs)

#MAX_ARGS Maximum number of arguments

#MAX_BYTE Greatest value possible in a BYTE

#MAX_DIMS Maximum allowed number of array dimensions

#MAX_DOUBLE Greatest value possible in a DOUBLE

#MAX_FLOAT Greatest value possible in a FLOAT

#MAX_LONG Greatest value possible in a LONG

#MAX_PIXMAP Greatest pixmap number

#MAX_WINDOW Greatest window number

#MAX_WORD Greatest value possible in an INT

#MIN_DOUBLE Smallest nonzero value possible in a DOUBLE

#MIN_FLOAT Smallest nonzero value possible in a FLOAT

#MIN_LONG Most negative value possible in a LONG

#MIN_WORD Most negative value possible in an INT

#MINUS1 Minus one

#MSBFIRST Byte order

#PI Pi

#P3D Projection matrix

#R Gas constant (cgs)

#R.D Radians to degrees

#RAD Radians to degrees

#ROW Number of lines on the terminal

#STACK User stack

#TYPE ANA data types

#TYPESIZE Sizes of data types

#ZERO System zero (don't use)