imported constants in hmatrix and smatrix

src/mmath/hmatrix.nim

@@ -3,6 +3,8 @@ from hvector import HVector, newHVector, buildHVector
 from pivot import HPivot, newHPivot, `[]`, `[]=`, len
 from error import SizeError, SingularMatrixError
 from math import sqrt
+import constant
+
 
 type
   HMatrix*[T] = object

src/mmath/smatrix.nim

@@ -3,6 +3,7 @@ from svector import SVector
 from pivot import SPivot, newSPivot, `[]`, `[]=`, len
 from error import SizeError, SingularMatrixError
 from math import sqrt
+import constant
 
 type
   SMatrix*[ROWS, COLUMNS: static[int], T] = object