FeSquare function
FeSquare calculates h = f*f. Can overlap h with f.
Preconditions: |f| bounded by 1.12^26,1.12^25,1.12^26,1.12^25,etc.
Postconditions: |h| bounded by 1.12^25,1.12^24,1.12^25,1.12^24,etc.
Implementation
void FeSquare(FieldElement h, FieldElement f) {
var fs = feSquare(f);
var h0 = fs[0]!;
var h1 = fs[1]!;
var h2 = fs[2]!;
var h3 = fs[3]!;
var h4 = fs[4]!;
var h5 = fs[5]!;
var h6 = fs[6]!;
var h7 = fs[7]!;
var h8 = fs[8]!;
var h9 = fs[9]!;
FeCombine(h, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9);
}