|  |  D.15.30.3 boxSet Procedure from libraryrootisolation.lib(see  rootisolation_lib).
 
Example:Usage:
boxSet(B, i, I);B box, i int, I interval
Return:
new box CwhereC[i]==I
Purpose:
modifies a single entry of a box
 |  | LIB "rootisolation.lib";
ring R = 0,(x,y,z),dp;
box B; B;
==> [0, 0] x [0, 0] x [0, 0]
B = boxSet(B, 2, bounds(-1,1)); B;
==> [0, 0] x [-1, 1] x [0, 0]
B = boxSet(B, 1, B[2]); B;
==> [-1, 1] x [-1, 1] x [0, 0]
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