@c ----------------------------------------------------------------------
@node abort, process
@subheading Syntax

@example
#include <stdlib.h>

void volatile abort(void);
@end example

@subheading Description

When you call @code{abort}, the message "Abort!" is printed on stdout
and the program exits with an exit code of one. 

@subheading Return Value

This function does not return.

@subheading Portability

@port-note posix The return-value of one is DJGPP-specific.
@portability ansi, posix

@subheading Example

@example
if ((q = malloc(100)) == NULL)
  abort();
@end example

@c ----------------------------------------------------------------------
@node abs, math
@subheading Syntax

@example
#include <stdlib.h>

int abs(int value);
@end example

@subheading Return Value

The absolute value of @var{value} is returned.

@subheading Portability

@portability ansi, posix

@subheading Example

@example
int sq = 7;
sq = sq * abs(sq) + 1;
@end example