The library package Numerics is the parent of several
child units that provide facilities for mathematical computation. One
child, the generic package Generic_Elementary_Functions, is defined in
A.5.1, together with nongeneric equivalents;
two others, the package Float_Random and the generic package Discrete_Random,
are defined in
A.5.2. Additional (optional)
children are defined in
Annex G, “
Numerics”.
package Ada.Numerics
is
pragma Pure(Numerics);
Argument_Error :
exception;
Pi :
constant :=
3.14159_26535_89793_23846_26433_83279_50288_41971_69399_37511;
π :
constant := Pi;
e :
constant :=
2.71828_18284_59045_23536_02874_71352_66249_77572_47093_69996;
end Ada.Numerics;
The Argument_Error exception is raised by a subprogram
in a child unit of Numerics to signal that one or more of the actual
subprogram parameters are outside the domain of the corresponding mathematical
function.
The implementation may specify the values of Pi and
e to a larger number of significant digits.
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