.\" This replaces an earlier man page written by Walter Harms
.\" <walter.harms@informatik.uni-oldenburg.de>.
.\"
-.TH QECVT 3 2002-08-25 "GNU" "Linux Programmer's Manual"
+.TH QECVT 3 2007-07-26 "GNU" "Linux Programmer's Manual"
.SH NAME
qecvt, qfcvt, qgcvt \- convert a floating-point number to a string
.SH SYNOPSIS
.BI "int *" sign );
.sp
.BI "char *qgcvt(long double " number ", int " ndigit ", char *" buf );
+.sp
+.in -4n
+Feature Test Macro Requirements for glibc (see
+.BR feature_test_macros (7)):
+.in
+.sp
+.BR qecvt (),
+.BR qfcvt (),
+.BR qgcvt ():
+.br
+_SVID_SOURCE || _BSD_SOURCE || _XOPEN_SOURCE\ >=\ 500
.SH DESCRIPTION
The functions
.BR qecvt (),