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-.TH LOGB 3 2008-08-05 "" "Linux Programmer's Manual"
+.TH LOGB 3 2010-09-20 "" "Linux Programmer's Manual"
.\"O .SH NAME
.SH ̾Á°
.\"O logb, logbf, logbl \- get exponent of a floating-point value
.sp
.ad l
.BR logb ():
-_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 500 || _ISOC99_SOURCE; or
+.RS 4
+_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 500 ||
+_XOPEN_SOURCE\ &&\ _XOPEN_SOURCE_EXTENDED || _ISOC99_SOURCE ||
+_POSIX_C_SOURCE\ >=\ 200112L;
+.br
+or
.I cc\ -std=c99
+.RE
.br
.BR logbf (),
.BR logbl ():
-_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
+.RE
.ad b
.\"O .SH DESCRIPTION
.SH ÀâÌÀ