# op:numeric-mod - XPath XQuery Reference

Returns the remainder resulting from dividing $arg1, the dividend, by
               $arg2, the divisor. Defines the semantics of the "mod" operator when
         applied to two numeric values.General rules: see .The operation a mod b for operands that are xs:integer or
               xs:decimal, or types derived from them, produces a result such that
               (a idiv b)*b+(a mod b) is equal to a and the magnitude of
            the result is always less than the magnitude of b. This identity holds even
            in the special case that the dividend is the negative integer of largest possible
            magnitude for its type and the divisor is -1 (the remainder is 0). It follows from this
            rule that the sign of the result is the sign of the dividend. For xs:float and xs:double operands the following rules
            apply:If either operand is NaN, the result is NaN.If the dividend is positive or negative infinity, or the divisor is positive or
                  negative zero (0), or both, the result is NaN.If the dividend is finite and the divisor is an infinity, the result equals the
                  dividend.If the dividend is positive or negative zero and the divisor is finite, the result
                  is the same as the dividend.In the remaining cases, where neither positive or negative infinity, nor positive
                  or negative zero, nor NaN is involved, the result obeys (a idiv
                     b)*b+(a mod b) = a.
                  
                  Division is truncating division, analogous to integer division, not  rounding division i.e. additional digits are truncated,
                  not rounded to the required precision.op:numeric-mod(10,3)1op:numeric-mod(6,-2)0op:numeric-mod(4.5,1.2)0.9op:numeric-mod(1.23E2, 0.6E1)3.0E0A dynamic error is raised  for xs:integer
            and xs:decimal operands, if $arg2 is zero.