.SH SYNOPSIS
.nf
.B #include <string.h>
-.PP
+.P
.BI "size_t strnlen(const char " s [. maxlen "], size_t " maxlen );
.fi
-.PP
+.P
.RS -4
Feature Test Macro Requirements for glibc (see
.BR feature_test_macros (7)):
.RE
-.PP
+.P
.BR strnlen ():
.nf
Since glibc 2.10: