IBM 4361 Processor

Highlights of 4361 Processor:
•Commercial performance equivalent to the 4331 model 2.
•Factory installed option increases engineering/scientific performance up to 1.4 times the model 2 for short precision and 2.2 times for long precision.
•High-Accuracy Arithmetic Facility:
◦Allows computational procedures with algorithmic verification of results.
◦New floating-point instructions are implemented for computation of basic arithmetic operations and the scalar product with maximum accuracy.
◦Provides direct rounding for the short and long floating-point hexadecimal formats.
•Microcode-assisted support for improved performance of frequently used mathematical functions.