synopsis: INT perm_matrix(OP a,b)
description:computes the permutation matrix. This is the matrix with 1 at the place (a_i, i) and 0 elsewhere. The permutation a must be of the type VECTOR. a and b may be equal. the return value is OK if no error occured.
#include "def.h" #include "macro.h" ANFANG scan(PERMUTATION,a); println(a); perm_matrix(a,a); println(a); ENDE
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