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- #define NOCCARGC /* no argument count passing */
- extern char *Umemptr;
- /*
- ** Return the number of bytes of available memory.
- ** In case of a stack overflow condition, if 'abort'
- ** is non-zero the program aborts with an 'S' clue,
- ** otherwise zero is returned.
- */
- avail(abort) int abort; {
- char x;
- if(&x < Umemptr) {
- if(abort) exit('M');
- return (0);
- }
- return (&x - Umemptr);
- }
-