NAGtrace(ZZ) -- set the trace level in NumericalAlgebraicGeometry package

Synopsis

Usage:
a = NAGtrace b
Function: NAGtrace
Inputs:
- an integer, b, new level
Outputs:
- a, old level

Description

Determines how talkative the procedures of NumericalAlgebraicGeometry are. The most meaningful values are:

0 -- silent
1 -- progress and timings
2 -- more messages than 1

The progress is displayed as follows:

'.' = regular solution found
'S' = singular solution (or encountered a singular point on the path)
'I' = a homotopy path (most probably) diverged to infinity
'M' = minimum step bound reached

i1 : R = CC[x,y];

i2 : S = {x^2-1,y^2-1};

i3 : T = {x^2+y^2-1, x+y};

i4 : NAGtrace 1

o4 = 0

i5 : track(S,T,{(1,1),(1,-1),(-1,1),(-1,-1)})

.M.MSetup time: 0
Computing time:0

o5 = {{{.707107, -.707107}}, {{.296196, -1.40024}}, {{-.707107, .707107}},
     ------------------------------------------------------------------------
     {{.290943, -1.40261}}}

o5 : List