.\" by Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
.\" Updated 2008-09-16, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
.\"
-.TH LOG 3 2008-08-10 "" "Linux Programmer's Manual"
+.TH LOG 3 2010-09-20 "" "Linux Programmer's Manual"
.\"O .SH NAME
.\"O log, logf, logl \- natural logarithmic function
.SH ̾Á°
.ad l
.BR logf (),
.BR logl ():
-_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE; or
+.RS 4
+_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE ||
+_POSIX_C_SOURCE\ >=\ 200112L;
+.br
+or
.I cc\ -std=c99
-.ad b
+.RE
+.ad
.\"O .SH DESCRIPTION
.SH ÀâÌÀ
.\"O The
.SH ´ØÏ¢¹àÌÜ
.BR cbrt (3),
.BR clog (3),
+.BR log10 (3),
.BR log1p (3),
+.BR log2 (3),
.BR sqrt (3)