Annex G
(normative)
Numerics
{numerics}
The Numerics Annex specifies
features for complex arithmetic, including complex
I/O;
a mode (“strict mode”), in which the
predefined arithmetic operations of floating point and fixed point types
and the functions and operations of various predefined packages have
to provide guaranteed accuracy or conform to other numeric performance
requirements, which the Numerics Annex also specifies;
a mode (“relaxed mode”), in which no
accuracy or other numeric performance requirements need be satisfied,
as for implementations not conforming to the Numerics Annex;
{
AI95-00296-01}
models of floating point and fixed point arithmetic on which the accuracy
requirements of strict mode are based;
{
AI95-00296-01}
the definitions of the model-oriented attributes of floating point types
that apply in the strict mode; and
{
AI95-00296-01}
features for the manipulation of real and complex vectors and matrices.
Implementation Advice
If Fortran (respectively, C) is widely supported
in the target environment, implementations supporting the Numerics Annex
should provide the child package Interfaces.Fortran (respectively, Interfaces.C)
specified in
Annex B and should support a
convention_identifier
of Fortran (respectively, C) in the interfacing pragmas (see
Annex
B), thus allowing Ada programs to interface with programs written
in that language.
Implementation Advice: If Fortran (respectively,
C) is supported in the target environment, then interfacing to Fortran
(respectively, C) should be supported as specified in
Annex
B.
Extensions to Ada 83
{
extensions to Ada 83}
This
Annex is new to Ada 95.
Sponsored by Ada-Europe