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D.15.30.5 ivmatSet

Procedure from library rootisolation.lib (see rootisolation_lib).

Usage:
ivmatSet(A, i, j, I); A ivmat, i, j, int, I interval

Return:
interval matrix A where A[i][j] == I

Purpose:
modify a single entry of an ivmat

Example:
 
LIB "rootisolation.lib";
ring R = 0,x,dp;
ivmat A = ivmatInit(2,2);             A;
==> [0, 0],[0, 0]
==> [0, 0],[0, 0]
==> 
A = ivmatSet(A, 1, 2, bounds(1, 2));  A;
==> [0, 0],[1, 2]
==> [0, 0],[0, 0]
==>