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/* This file is part of the GNU plotutils package. */
/*
* Copyright (C) 1982-1994, Nicholas B. Tufillaro. All rights reserved.
*
* GNU enhancements Copyright (C) 1996, 1997, 1998, 1999, 2005, 2008, Free
* Software Foundation, Inc.
*/
/*
* symbol table space management routines
*
*/
#include "sys-defines.h"
#include "ode.h"
#include "extern.h"
struct sym *
lookup (const char *nam)
{
struct sym *sp;
for (sp = symtab; sp != NULL; sp = sp->sy_link)
if (strncmp (sp->sy_name, nam, NAMMAX) == 0)
return sp;
sp = salloc();
strncpy (sp->sy_name, nam, NAMMAX);
return sp;
}
struct sym *
salloc (void)
{
struct sym *sp;
sp = (struct sym *)xmalloc(sizeof(struct sym));
sp->sy_link = symtab;
symtab = sp;
sp->sy_expr = NULL;
sp->sy_value = sp->sy_prime = 0.0;
sp->sy_sserr = sp->sy_aberr = sp->sy_acerr = 0.0;
sp->sy_flags = 0;
return sp;
}
void
sfree (struct sym *sp)
{
if (sp != NULL)
free ((void *)sp);
}
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