diff --git a/man3/ceil.3 b/man3/ceil.3
index 7c50e53db..63f86f991 100644
--- a/man3/ceil.3
+++ b/man3/ceil.3
@@ -47,9 +47,13 @@ Feature Test Macro Requirements for glibc (see
 .ad l
 .BR ceilf (),
 .BR ceill ():
-_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE; or
+.RS 4
+_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE;
+.br
+or
 .I cc\ -std=c99
-.ad b
+.RE
+.ad
 .SH DESCRIPTION
 These functions return the smallest integral value that is not less than
 .IR x .
diff --git a/man3/cos.3 b/man3/cos.3
index 29a1620cf..535eb081d 100644
--- a/man3/cos.3
+++ b/man3/cos.3
@@ -53,9 +53,13 @@ Feature Test Macro Requirements for glibc (see
 .ad l
 .BR cosf (),
 .BR cosl ():
-_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE; or
+.RS 4
+_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE;
+.br
+or
 .I cc\ -std=c99
-.ad b
+.RE
+.ad
 .SH DESCRIPTION
 The
 .BR cos ()
diff --git a/man3/cosh.3 b/man3/cosh.3
index b9e657db9..7a31587b5 100644
--- a/man3/cosh.3
+++ b/man3/cosh.3
@@ -55,9 +55,13 @@ Feature Test Macro Requirements for glibc (see
 .ad l
 .BR coshf (),
 .BR coshl ():
-_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE; or
+.RS 4
+_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE;
+.br
+or
 .I cc\ -std=c99
-.ad b
+.RE
+.ad
 .SH DESCRIPTION
 The
 .BR cosh ()
diff --git a/man3/floor.3 b/man3/floor.3
index 43f36a199..6090a2f80 100644
--- a/man3/floor.3
+++ b/man3/floor.3
@@ -46,9 +46,13 @@ Feature Test Macro Requirements for glibc (see
 .ad l
 .BR floorf (),
 .BR floorl ():
-_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE; or
+.RS 4
+_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE;
+.br
+or
 .I cc\ -std=c99
-.ad b
+.RE
+.ad
 .SH DESCRIPTION
 These functions return the largest integral value that is not greater than
 .IR x .
diff --git a/man3/fmod.3 b/man3/fmod.3
index 104bf791a..b8a9bc384 100644
--- a/man3/fmod.3
+++ b/man3/fmod.3
@@ -54,9 +54,13 @@ Feature Test Macro Requirements for glibc (see
 .ad l
 .BR fmodf (),
 .BR fmodl ():
-_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE; or
+.RS 4
+_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE;
+.br
+or
 .I cc\ -std=c99
-.ad b
+.RE
+.ad
 .SH DESCRIPTION
 The
 .BR fmod ()
diff --git a/man3/frexp.3 b/man3/frexp.3
index e5fc4f9e1..f168c7986 100644
--- a/man3/frexp.3
+++ b/man3/frexp.3
@@ -53,9 +53,13 @@ Feature Test Macro Requirements for glibc (see
 .ad l
 .BR frexpf (),
 .BR frexpl ():
-_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE; or
+.RS 4
+_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE;
+.br
+or
 .I cc\ -std=c99
-.ad b
+.RE
+.ad
 .SH DESCRIPTION
 The
 .BR frexp ()
diff --git a/man3/ldexp.3 b/man3/ldexp.3
index dafb62921..01b1407b9 100644
--- a/man3/ldexp.3
+++ b/man3/ldexp.3
@@ -53,9 +53,13 @@ Feature Test Macro Requirements for glibc (see
 .ad l
 .BR ldexpf (),
 .BR ldexpl ():
-_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE; or
+.RS 4
+_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE;
+.br
+or
 .I cc\ -std=c99
-.ad b
+.RE
+.ad
 .SH DESCRIPTION
 The
 .BR ldexp ()
diff --git a/man3/log.3 b/man3/log.3
index b3f66209f..005f2cdda 100644
--- a/man3/log.3
+++ b/man3/log.3
@@ -55,9 +55,13 @@ Feature Test Macro Requirements for glibc (see
 .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;
+.br
+or
 .I cc\ -std=c99
-.ad b
+.RE
+.ad
 .SH DESCRIPTION
 The
 .BR log ()
diff --git a/man3/log10.3 b/man3/log10.3
index 9ab192772..26e6168c6 100644
--- a/man3/log10.3
+++ b/man3/log10.3
@@ -55,9 +55,13 @@ Feature Test Macro Requirements for glibc (see
 .ad l
 .BR log10f (),
 .BR log10l ():
-_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE; or
+.RS 4
+_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE;
+.br
+or
 .I cc\ -std=c99
-.ad b
+.RE
+.ad
 .SH DESCRIPTION
 The
 .BR log10 ()
diff --git a/man3/modf.3 b/man3/modf.3
index cfb1e4288..d64b59801 100644
--- a/man3/modf.3
+++ b/man3/modf.3
@@ -53,9 +53,13 @@ Feature Test Macro Requirements for glibc (see
 .ad l
 .BR modf (),
 .BR modl ():
-_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE; or
+.RS 4
+_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE;
+.br
+or
 .I cc\ -std=c99
-.ad b
+.RE
+.ad
 .SH DESCRIPTION
 The
 .BR modf ()
diff --git a/man3/pow.3 b/man3/pow.3
index cf00dd80f..a17e30825 100644
--- a/man3/pow.3
+++ b/man3/pow.3
@@ -54,9 +54,13 @@ Feature Test Macro Requirements for glibc (see
 .ad l
 .BR powf (),
 .BR powl ():
-_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE; or
+.RS 4
+_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE;
+.br
+or
 .I cc\ -std=c99
-.ad b
+.RE
+.ad
 .SH DESCRIPTION
 The
 .BR pow ()
diff --git a/man3/sin.3 b/man3/sin.3
index c9df35ad2..ded382efa 100644
--- a/man3/sin.3
+++ b/man3/sin.3
@@ -54,9 +54,13 @@ Feature Test Macro Requirements for glibc (see
 .ad l
 .BR sinf (),
 .BR sinl ():
-_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE; or
+.RS 4
+_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE;
+.br
+or
 .I cc\ -std=c99
-.ad b
+.RE
+.ad
 .SH DESCRIPTION
 The
 .BR sin ()
diff --git a/man3/sinh.3 b/man3/sinh.3
index 6e81e65db..86900f96e 100644
--- a/man3/sinh.3
+++ b/man3/sinh.3
@@ -55,9 +55,13 @@ Feature Test Macro Requirements for glibc (see
 .ad l
 .BR sinhf (),
 .BR sinhl ():
-_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE; or
+.RS 4
+_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE;
+.br
+or
 .I cc\ -std=c99
-.ad b
+.RE
+.ad
 .SH DESCRIPTION
 The
 .BR sinh ()
diff --git a/man3/sqrt.3 b/man3/sqrt.3
index 95723c8c2..46f3a0ba6 100644
--- a/man3/sqrt.3
+++ b/man3/sqrt.3
@@ -53,9 +53,13 @@ Feature Test Macro Requirements for glibc (see
 .ad l
 .BR sqrtf (),
 .BR sqrtl ():
-_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE; or
+.RS 4
+_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE;
+.br
+or
 .I cc\ -std=c99
-.ad b
+.RE
+.ad
 .SH DESCRIPTION
 The
 .BR sqrt ()
diff --git a/man3/tan.3 b/man3/tan.3
index b3dc25452..f069055d0 100644
--- a/man3/tan.3
+++ b/man3/tan.3
@@ -54,9 +54,13 @@ Feature Test Macro Requirements for glibc (see
 .ad l
 .BR tanf (),
 .BR tanl ():
-_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE; or
+.RS 4
+_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE;
+.br
+or
 .I cc\ -std=c99
-.ad b
+.RE
+.ad
 .SH DESCRIPTION
 The
 .BR tan ()
diff --git a/man3/tanh.3 b/man3/tanh.3
index 859c09e0b..4bbf889bf 100644
--- a/man3/tanh.3
+++ b/man3/tanh.3
@@ -54,9 +54,14 @@ Feature Test Macro Requirements for glibc (see
 .ad l
 .BR tanhf (),
 .BR tanhl ():
-_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE; or
+.RS 4
+_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE;
+.br
+or
 .I cc\ -std=c99
-.ad b
+.RE
+.a.RE
+.ad
 .SH DESCRIPTION
 The
 .BR tanh ()