diff options
Diffstat (limited to 'lib/libc')
-rw-r--r-- | lib/libc/stdlib/strtod.3 | 31 |
1 files changed, 28 insertions, 3 deletions
diff --git a/lib/libc/stdlib/strtod.3 b/lib/libc/stdlib/strtod.3 index f1fc781f7df..13db821c68c 100644 --- a/lib/libc/stdlib/strtod.3 +++ b/lib/libc/stdlib/strtod.3 @@ -29,9 +29,9 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.\" $OpenBSD: strtod.3,v 1.14 2008/09/13 22:48:45 martynas Exp $ +.\" $OpenBSD: strtod.3,v 1.15 2012/09/15 11:47:04 martynas Exp $ .\" -.Dd $Mdocdate: September 13 2008 $ +.Dd $Mdocdate: September 15 2012 $ .Dt STRTOD 3 .Os .Sh NAME @@ -87,7 +87,32 @@ or .Sq e , followed by an optional plus or minus sign, followed by a sequence of digits. .Pp -Leading whitespace characters in the string (as defined by the +Alternatively, if the portion of the string following the optional +plus or minus sign begins with +.Dq INF +or +.Dq NAN , +ignoring case, it is interpreted as an infinity or a quiet \*(Na, +respectively. +The syntax +.Dq Xo Pf NAN( Ar "s" ) Xc , +where +.Ar s +is an alphanumeric string, produces the same value as the call +.Fo nan +.Qq Ar s Ns +.Fc +(respectively, +.Fo nanf +.Qq Ar s Ns +.Fc +and +.Fo nanl +.Qq Ar s Ns +.Fc . ) +.Pp +In any of the above cases, leading whitespace characters in the +string (as defined by the .Xr isspace 3 function) are skipped. .Sh RETURN VALUES |