Glish supports the usual arithmetic operations: addition, subtraction,
multiplication, division, modulus, and exponentiation. The corresponding
operators are +, -, *, /, %, and
All work element-by-element given two equal-sized vectors, or pair a
scalar with every element in a vector in turn given one scalar and one vector.
Arithmetic operators applied to arrays perform the same way as arithmetic
operators applied to vectors, but the result is an array instead of a vector.
All require numeric operands and yield a numeric result.
See § 3.2.3, page , for details.