// file: $isip/class/math/integral/integral.h//// this is the basic isip environment include file. all integral types// are defined in this file. these are also implemented as C++ classes.// all software must be built upon these basic types.//// these definitions follow a format in which the data type is related// to particular machine defined formats. the syntax is type_x, where// type refers to a standard C data type, and x refers to the number// of bytes required by a machine-specific implementation.// make sure definitions are only made once// follow the standard isip convention in defining the symbol to be// used to signal the preprocessor//#ifndef __ISIP_INTEGRAL#define __ISIP_INTEGRAL// system include files - since all classes include a debug method that//  requires a definition of FILE*, we will include this file here,//  in order that every class need not replicate this. For convenience,//  we also include stdlib.h, since this contains many useful C functions.//#include <stdio.h>#include <stdlib.h>#include <string.h>// integral type #0: void pointer//typedef void* void_p;// integral type #1: logical or boolean variables//typedef signed char logical_1;// integral type #2: a character//// this is mainly for convenience. a character object is actually a// multi-byte sequence that supports multiple encoding sequences.// this definition is mainly to support/interface to C.//typedef unsigned char char_1;// integral type #3: a signed integer//typedef char int_1;typedef short int int_2;typedef long int int_4;// integral type #4: an unsigned integer//typedef unsigned char uint_1;typedef unsigned short int uint_2;typedef unsigned long int uint_4;// integral type #5: a floating point number//typedef float float_4;typedef double float_8;// end of include file//#endif