File: atoi.c

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/*
Copyright (c) 1990 Regents of the University of California.
All rights reserved.
 */
/*
FUNCTION
   <<atoi>>, <<atol>>---string to integer

INDEX
        atoi
INDEX
        atol
INDEX
        _atoi_r
INDEX
        _atol_r

SYNOPSIS
        #include <stdlib.h>
        int atoi(const char *<[s]>);
        long atol(const char *<[s]>);
        int _atoi_r(struct _reent *<[ptr]>, const char *<[s]>);
        long _atol_r(struct _reent *<[ptr]>, const char *<[s]>);

DESCRIPTION
   <<atoi>> converts the initial portion of a string to an <<int>>.
   <<atol>> converts the initial portion of a string to a <<long>>.

   <<atoi(s)>> is implemented as <<(int)strtol(s, NULL, 10).>>
   <<atol(s)>> is implemented as <<strtol(s, NULL, 10).>>

   <<_atoi_r>> and <<_atol_r>> are reentrant versions of <<atoi>> and
   <<atol>> respectively, passing the reentrancy struct pointer.

RETURNS
   The functions return the converted value, if any. If no conversion was
   made, <<0>> is returned.

PORTABILITY
<<atoi>>, <<atol>> are ANSI.

No supporting OS subroutines are required.
*/

/*
 * Andy Wilson, 2-Oct-89.
 */

#include <stdlib.h>

int
atoi(const char *s)
{
    return (int)strtol(s, NULL, 10);
}