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/* stdc.h -- JT standard C/C++ header file, cut-down for modern code only */
/* $Id$ */
/*
* ***** THIS VERSION IS FOR ANSI/ISO C AND C++ *****
*/
/* this header file is idempotent */
#ifndef STDC_H_SEEN
#define STDC_H_SEEN
/******************************************************************************/
/*
* I use this empty macro in all if statements -- I like the symmetry
* between the two branches of an if statement.
*
* if (foo)
* then bar;
*
* if (foo)
* then bar;
* else baz;
*/
#define then /* empty */
/******************************************************************************/
/*
* misc stuff
*/
#ifdef M_PI /* usually defined in <math.h> */
#define PI M_PI
#endif
#define STRING_EQUAL(s_,t_) (strcmp(s_,t_) == 0)
/* C library uses abs() for integer absolute value; I prefer iabs() */
#define iabs(x_) abs(x_)
/******************************************************************************/
/*
* misc sentinal values
*/
/* n.b. this value is usually 10...0 binary for 2's-complement arithmetic */
#define INT_SENTINAL_VALUE (~ INT_MAX) /* from <limits.h> */
#define FLOAT_SENTINAL_VALUE (- FLT_MAX) /* from <float.h> */
#define DOUBLE_SENTINAL_VALUE (- DBL_MAX) /* from <float.h> */
/******************************************************************************/
#ifdef __cplusplus
namespace jtutil
{
#endif
/*
* All my error handling is done with my error_exit() routine. It
* prints an error message to stderr, then does an exit() or abort().
* It does *not* return to its caller. It's declared to return an
* int , however, so it may be easily used in conditional expressions
* like
* foo = bar_ok ? baz(bar) : error_exit(...);
*/
#ifdef __cplusplus
extern "C"
#endif
int error_exit(int exit_code, const char *format, ...)
#ifdef __GNUC__
__attribute__ ((noreturn))
__attribute__ ((format(printf,2,3)))
#endif
;
/*
* error_exit() uses the following exit() codes:
* OK_EXIT ==> everything's under control
* ERROR_EXIT ==> something bad has happened
* PANIC_EXIT ==> diasaster ==> force (eg) core dump, stack trace
*/
#ifdef VMS
#define OK_EXIT 1
#define ERROR_EXIT 3
#define PANIC_EXIT (-1)
#else
#define OK_EXIT 0
#define ERROR_EXIT 1
#define PANIC_EXIT (-1)
#endif
#ifdef __cplusplus
} /* namespace jtutil */
#endif
/******************************************************************************/
#endif /* STDC_H_SEEN */
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