SAX

SAX (SHARP APL for UNIX) was a version of SHARP APL offered by Soliton Associates. Notable features of SAX include function rank, the Rank operator, and leading axis theory, as well as relative comparison tolerance and close composition operators including Under.

Scalar
All scalar functions have rank zero.

Numeric types
SHARP originally supported only real numbers using double (8-byte) precision. Numbers were stored in one of three types:
 * Boolean, with one bit per value
 * Integer, with four bytes per value
 * Floating, with eight bytes per value

SATN-40 describes the addition of complex numbers to SHARP APL.