Jacobi symbol: Difference between revisions
Content added Content deleted
(Added Sidef) |
m (→{{header|REXX}}: added whitespace and comments.) |
||
Line 297:
do r=1 by 2 to rows; _= right(r, 3) /*build odd (numbered) rows of a table.*/
do c=0 to cols /* [↓] build a column for a table row.*/
_= _ ! right(jacobi(c, r), 2); != '│'
end /*c*/
say _ '║'; != '║' /*display a table row; reset grid glyph*/
Line 305:
/*──────────────────────────────────────────────────────────────────────────────────────*/
hdrs: @.1= 'n/a ║'; do c=0 to cols; @.1= @.1 || right(c, 3)" "; end
L= length(@.1); @.1= left(@.1, L - 1)
@.2= '════╬'; do c=0 to cols; @.2= @.2 || "════╤" ; end
L= length(@.2); @.2= left(@.2, L - 1)"╗"
!= '║' ; return /*define an external grid border glyph.*/
/*──────────────────────────────────────────────────────────────────────────────────────*/
Line 319:
end /*while a//2==0*/
parse value a n with n a /*swap values of variables: A N */
if a//4==3 & n//4==3 then $= -$ /* A mod 4, N mod 4. Both ≡ 3 ?*/
a= a // n /*obtain A modulus N */
end /*while a\==0*/
if n==1 then return $
| |||