Singular

5.1.120 printf

Syntax:

printf ( string_expression [, any_expressions] )

Return:

none

Purpose:

printf(fmt,...); performs output formatting. The first argument is a format control string. Additional arguments may be required, depending on the content of the control string. A series of output characters is generated as directed by the control string; these characters are displayed (i.e., printed to standard out).
The control string fmt is simply text to be copied, except that the string may contain conversion specifications.
Type help print; for a listing of valid conversion specifications. As an addition to the conversions of print, the %n and %2 conversion specification does not consume an additional argument, but simply generates a newline character.

Note:

If one of the additional arguments is a list, then it should be enclosed once more into a list() command, since passing a list as an argument flattens the list by one level.

  ring r=0,(x,y,z),dp;
module m=[1,y],[0,x+z];
intmat M=betti(mres(m,0));
list l=r,m,matrix(M);
printf("s:%s,l:%l",1,2);
==> s:1,l:int(2)
printf("s:%s",l);
==> s:(QQ),(x,y,z),(dp(3),C)
printf("s:%s",list(l));
==> s:(QQ),(x,y,z),(dp(3),C),y*gen(2)+gen(1),x*gen(2)+z*gen(2),1,1
printf("2l:%2l",list(l));
==> 2l:list("(QQ),(x,y,z),(dp(3),C)",
==> module(y*gen(2)+gen(1),
==> x*gen(2)+z*gen(2)),
==> matrix(ideal(1,
==> 1),1,2))
==> 
printf("%p",matrix(M));
==> 1,1
printf("%;",matrix(M));
==> _[1,1]=1
==> _[1,2]=1
==> 
printf("%b",M);
==>            0     1
==> ------------------
==>     0:     1     1
==> ------------------
==> total:     1     1
==>