.Dt ATOI 3
.Os
.Sh NAME
-.Nm atoi
+.Nm atoi ,
+.Nm atoi_l
.Nd convert
.Tn ASCII
string to integer
.Sh SYNOPSIS
.In stdlib.h
.Ft int
-.Fn atoi "const char *nptr"
+.Fn atoi "const char *str"
+.In xlocale.h
+.Ft int
+.Fn atoi_l "const char *str" "locale_t loc"
.Sh DESCRIPTION
The
.Fn atoi
function converts the initial portion of the string pointed to by
-.Fa nptr
+.Fa str
to
.Vt int
representation.
.Pp
It is equivalent to:
.Bd -literal -offset indent
-(int)strtol(nptr, (char **)NULL, 10);
+(int)strtol(str, (char **)NULL, 10);
.Ed
.Pp
+While the
+.Fn atoi
+function uses the current locale, the
+.Fn atoi_l
+function may be passed a locale directly. See
+.Xr xlocale 3
+for more information.
+.Sh IMPLEMENTATION NOTES
+The
+.Fn atoi
+and
+.Fn atoi_l
+functions are thread-safe and async-cancel-safe.
+.Pp
The
.Fn atoi
-function has been deprecated by
+and
+.Fn atoi_l
+functions have been deprecated by
.Fn strtol
+and
+.Fn strtol_l
and should not be used in new code.
.Sh ERRORS
The function
.Xr atol 3 ,
.Xr strtod 3 ,
.Xr strtol 3 ,
-.Xr strtoul 3
+.Xr strtoul 3 ,
+.Xr xlocale 3
.Sh STANDARDS
The
.Fn atoi