| Roger Lipsett, Carl F. Schaefer, Cary Ussery - 1989 - 332 lapas
...that returns the current simulation time: function NOW return TIME; -- predefined numeric subtypes: subtype NATURAL is INTEGER range 0 to INTEGER'HIGH;...subtype POSITIVE is INTEGER range 1 to INTEGER'HIGH; - predefined array types: type STRING is array (POSITIVE range o) of CHARACTER; type BIT_VECTOR is... | |
| Jean-Michel Bergé, Alain Fonkoua, Serge Maginot, Jacques Rouillard - 1992 - 486 lapas
...that returns the current simulation time: function NOW return TIME; -- predefined numeric subtypes: subtype NATURAL Is INTEGER range 0 to INTEGER'HIGH...subtype POSITIVE Is INTEGER range 1 to INTEGER'HIGH ; - predefined array types: type STRING Is array (POSITIVE range <>) of CHARACTER ; type BITJ/ECTOR... | |
| Peter J. Ashenden - 1998 - 340 lapas
...'ae', T, '6', 'P'. V. T, 'x', 'B', '5'' T, V, 'y'); - - implicitly declared for character operands: --implicitly declared for integer operands: --"=",...integer range 1 to integer'high; type real is range implementation defined; -- implicitly declared for real operands: "=", "/=", "<", "<=", ">", ">="... | |
| 2005 - 322 lapas
...它包括整数中非零和非负的数值。 它们在STANDARD 程序包中定义的源代码如下: SUBTYPE NATURAL IS INTEGER RANGE 0 TO INTEGER-HIGH;...SUBTYPE POSITIVE IS INTEGER RANGE 1 TO INTEGER'HIGH; ( 7 ) 实数( REAL ) 数据类型 VHDL 的实数类型类似于数学上的实数, 或称浮点数。... | |
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