Home Online Manual
Top
Back: liftstd
Forward: lres
FastBack: Functions and system variables
FastForward: Control structures
Up: Functions
Top: Singular Manual
Contents: Table of Contents
Index: Index
About: About this document

5.1.82 listvar

Syntax:
listvar ( [package] )
listvar ( [package,] type )
listvar ( [package,] ring_name )
listvar ( [package,] name )
listvar ( [package,] all )
Type:
none
Purpose:
lists all (user-)defined names:
  • listvar(): all currently visible names except procedures in the current namespace,
  • listvar(type): all currently visible names of the given type,
  • listvar(ring_name): all names which belong to the given ring,
  • listvar(name): the object with the given name,
  • listvar(all): all names except procedures in the current and Top namespace.
The current basering is marked with a *. The nesting level of variables in procedures is shown in square brackets.

package can be Current, Top or any other identifier of type package.

Example:
 
  proc t1 { }
  proc t2 { }
  ring s;
  poly ss;
  ring r;
  poly f=x+y+z;
  int i=7;
  ideal I=f,x,y;
  listvar();
==> // i                              [0]  int 7
==> // r                              [0]  *ring
==> //      I                              [0]  ideal, 3 generator(s)
==> //      f                              [0]  poly
==> // s                              [0]  ring
  listvar(r);
==> // r                              [0]  *ring
==> // I                              [0]  ideal, 3 generator(s)
==> // f                              [0]  poly
  listvar(t1);
==> // t1                             [0]  proc
  listvar(proc);
==> // t2                             [0]  proc
==> // t1                             [0]  proc
==> // mathicgb_prOrder               [0]  proc from singmathic.so (C)
==> // mathicgb                       [0]  proc from singmathic.so (C)
==> // create_ring                    [0]  proc from standard.lib
==> // min                            [0]  proc from standard.lib
==> // max                            [0]  proc from standard.lib
==> // datetime                       [0]  proc from standard.lib
==> // weightKB                       [0]  proc from standard.lib
==> // fprintf                        [0]  proc from standard.lib
==> // printf                         [0]  proc from standard.lib
==> // sprintf                        [0]  proc from standard.lib
==> // quotient4                      [0]  proc from standard.lib
==> // quotient5                      [0]  proc from standard.lib
==> // quotient3                      [0]  proc from standard.lib
==> // quotient2                      [0]  proc from standard.lib
==> // quotient1                      [0]  proc from standard.lib
==> // quot                           [0]  proc from standard.lib
==> // res                            [0]  proc from standard.lib
==> // groebner                       [0]  proc from standard.lib
==> // qslimgb                        [0]  proc from standard.lib
==> // hilbRing                       [0]  proc from standard.lib
==> // par2varRing                    [0]  proc from standard.lib
==> // quotientList                   [0]  proc from standard.lib
==> // stdhilb                        [0]  proc from standard.lib
==> // stdfglm                        [0]  proc from standard.lib
==> // Float                          [0]  proc from kernel (C)
==> // crossprod                      [0]  proc from kernel (C)
  LIB "polylib.lib";
  listvar(Poly);
==>    ? Poly is undefined
==>    ? error occurred in or before ./examples/listvar.sing line 14: `  list\
   var(Poly);`
See Names; Names in procedures; defined; names; package; type.