MC68882EI33A Datasheet, PDF (9/26 Pages) Freescale Semiconductor, Inc – HCMOS Enhanced Floating-Point Coprocessor

Freescale Semiconductor, Inc.
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PACKED DECIMAL REAL
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o~a program. These
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Figure 9. MC68882
are also useful at the start
Data Format Summary
MONADIC OPERATIONS
and end of a procedure to save and restore the register
Monadic operations have one operand. This operand
set of the calling routine, In order to reduce procedure
may be in a floating-point data register, memory, or in
call overhead, the list of registers to be saved or restored
an MC68020 or MC68030 data register. The result is al-
\
can be contained in a data register thus enabling run-
ways stored in a floating-point data register. For example,
time optimization by allowing a called routine to save as
the syntax for square root is:
few registers as possible, Note that no rounding or ov-
FSQRT.<fmt>
<ea>,FPn or,
erflow/underflow checking is performed by these oper-
FSQRT.X
FPm,FPn or,
ations,
FSQRT.X
FPn
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