63 lines
1.2 KiB
C
63 lines
1.2 KiB
C
/*
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FUNCTION
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<<atoi>>, <<atol>>---string to integer
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INDEX
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atoi
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INDEX
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atol
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INDEX
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_atoi_r
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INDEX
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_atol_r
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SYNOPSIS
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#include <stdlib.h>
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int atoi(const char *<[s]>);
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long atol(const char *<[s]>);
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int _atoi_r(struct _reent *<[ptr]>, const char *<[s]>);
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long _atol_r(struct _reent *<[ptr]>, const char *<[s]>);
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DESCRIPTION
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<<atoi>> converts the initial portion of a string to an <<int>>.
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<<atol>> converts the initial portion of a string to a <<long>>.
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<<atoi(s)>> is implemented as <<(int)strtol(s, NULL, 10).>>
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<<atol(s)>> is implemented as <<strtol(s, NULL, 10).>>
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<<_atoi_r>> and <<_atol_r>> are reentrant versions of <<atoi>> and
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<<atol>> respectively, passing the reentrancy struct pointer.
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RETURNS
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The functions return the converted value, if any. If no conversion was
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made, <<0>> is returned.
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PORTABILITY
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<<atoi>>, <<atol>> are ANSI.
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No supporting OS subroutines are required.
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*/
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/*
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* Andy Wilson, 2-Oct-89.
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*/
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#include <stdlib.h>
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#include <_ansi.h>
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#ifndef _REENT_ONLY
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int
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atoi (const char *s)
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{
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return (int) strtol (s, NULL, 10);
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}
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#endif /* !_REENT_ONLY */
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int
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_atoi_r (struct _reent *ptr,
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const char *s)
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{
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return (int) _strtol_r (ptr, s, NULL, 10);
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}
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