dmake/dbug/malloc/calloc.c

   1 /*
   2  * (c) Copyright 1990 Conor P. Cahill (uunet!virtech!cpcahil).
   3  * You may copy, distribute, and use this software as long as this
   4  * copyright statement is not removed.
   5  */
   6 #include <stdio.h>
   7
   8 /*
   9  * Function:    calloc()
  10  *
  11  * Purpose:     to allocate and nullify a data area
  12  *
  13  * Arguments:   nelem   - number of elements
  14  *              elsize  - size of each element
  15  *
  16  * Returns:     NULL    - if malloc fails
  17  *              or pointer to allocated space
  18  *
  19  * Narrative:   determine size of area to malloc
  20  *              malloc area.
  21  *              if malloc succeeds
  22  *                  fill area with nulls
  23  *              return ptr to malloc'd region
  24  */
  25 #ifndef lint
  26 static char rcs_header[] = "$Id: calloc.c,v 1.2 2006-07-25 10:07:11 rt Exp $";
  27 #endif
  28
  29 char *
  30 calloc(nelem,elsize)
  31     unsigned int          nelem;
  32     unsigned int          elsize;
  33 {
  34     char                * malloc();
  35     char                * memset();
  36     char                * ptr;
  37     unsigned int          size;
  38
  39     size = elsize * nelem;
  40
  41     if( (ptr = malloc(size)) != NULL)
  42     {
  43         (void) memset(ptr,'\0',(int)size);
  44     }
  45
  46     return(ptr);
  47 }
  48
  49