fpp_intro(A) — Apollo

FPP_$INTRO                        Domain/OS                         FPP_$INTRO


NAME
     intro - the Floating-Point Package

SYNOPSIS (C)
     #include <apollo/base.h>
     #include <apollo/fpp.h>

SYNOPSIS (Pascal)
     %include '/sys/ins/base.ins.pas';
     %include '/sys/ins/fpp.ins.pas';

SYNOPSIS (FORTRAN)
     %include '/sys/ins/base.ins.ftn'

DESCRIPTION
     The Floating-Point Package (fpp_$) calls manipulate floating-point con-
     trol and status registers, and save and restore floating-point states.

     The following is a list of the fpp_$ calls.

             fpp_$control             modify the floating-point con-
                                      trol register
             fpp_$restore             load a new floating-point state
             fpp_$save                save the floating-point state
             fpp_$save_restore        save the current and load a new
                                      floating-point state
             fpp_$save_restore_size   return the size of a floating-
                                      point state
             fpp_$status              modify the floating-point
                                      status register

   Data Types
     fpp_op_t
          An enumerated type for specifying the result of a fpp_$contol or
          fpp_$status call.  It takes one of the following predefined values:

          read_op
               Read from a floating-point control or status register.

          write_op
               Write to a floating-point control or status register.

          exch_op
               Exchange the contents of a floating-point control or status
               register with the contents of an argument.

   Errors
     fpp_$invalid_op
          The attempted operation is invalid.

     fpp_$unsupported_function
          The requested operation is not supported on the current hardware.
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