Data processing: software development – installation – and managem – Software program development tool – Translation of code
Reexamination Certificate
2006-07-18
2006-07-18
Chavis, John (Department: 2193)
Data processing: software development, installation, and managem
Software program development tool
Translation of code
Reexamination Certificate
active
07080364
ABSTRACT:
Methods and an apparatus for compiling a transcendental floating-point operation are disclosed. The disclosed techniques compile a transcendental floating-point operation by replacing the transcendental floating-point operation with an integer-based routine (e.g., a single routine) hand-coded to perform the transcendental floating-point operation. Each of the instructions in the integer-based routine, including the integer operations, is compiled directly into opcodes without primitive floating-point emulation calls. As a result, function nesting is reduced and more efficient algorithms are used. The disclosed system does not simply emulate basic floating-point operations using integer operations. Instead, portions of the computation are isolated where fixed-point accuracy is sufficient and thus native integer computations can be used. For example, computing (log(1+Z)−Z)/Z instead of computing log(1+Z).
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Iordache Cristina S.
Tang Ping T.
Chavis John
Hanley Flight & Zimmerman LLC
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