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411 REFERENCE · Wikibooks

Ada Programming/Attributes/'Machine Radix

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Attributes 'Machine_Radix __TOC__ Description X'Machine_Radix is an Ada attribute where X is any floating or fixed point type. It returns the radix of the hardware representation of type X. On most machines this will be 2. Machine_Radix is also an Ada aspect that may be set for decimal fixed point types via an attribute definition clause. The value is constrained to either 2 or 10. Example with Ada Text_IO; procedure Machine_Radix is package T_IO renames Adadot .Text_IO; package I_IO is new Adadot .Text_IOdot .Integer_IO (Integer); type My_Fixed_Point_Type is delta 0dot .1 range -1dot .0 double_dot .. 1dot .0; type My_Decimal_Type is delta 0dot .01 digits 10; begin T_IOdot .Put ("Radix of Float type = "); I_IOdot .Put (Float'Machine_Radix); T_IOdot .New_Line; T_IOdot .Put ("Radix of My_Fixed_Point_Type = "); I_IOdot .Put (My_Fixed_Point_Type'Machine_Radix); T_IOdot .New_Line; T_IOdot .Put ("Radix of My_Decimal_Type type = "); I_IOdot .Put (My_Decimal_Type'Machine_Radix); T_IOdot .New_Line; end Machine_Radix; The output with GNAT 4.6 on the x86-64 architecture is: Radix of Float type = 2 Radix of My_Fixed_Point_Type = 2 Radix of My_Decimal_Type type = 2 See also Wikibook Ada Programming Ada Programming/Attributes Ada Programming/Attributes/'Machine_Emax Ada Programming/Attributes/'Machine_Emin Ada Programming/Attributes/'Machine_Mantissa Ada Reference Manual A 5 3 Attributes of Floating Point Types A 5 4 Attributes of Fixed Point Types K Language-Defined Aspects and Attributes Address Address