RTEMS PowerPC Applications Supplement
The PowerPC architecture includes thirty-two, sixty-four bit floating point registers. All PowerPC floating point instructions interpret these registers as 32 double precision floating point registers, regardless of whether the processor has 64-bit or 32-bit implementation.
The floating point status and control register (fpscr) records exceptions and the type of result generated by floating-point operations. Additionally, it controls the rounding mode of operations and allows the reporting of floating exceptions to be enabled or disabled.
RTEMS PowerPC Applications Supplement
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