4 files changed, 4 insertions, 23 deletions
diff --git a/lib/libc/gen/getdomainname.3 b/lib/libc/gen/getdomainname.3
index 4d6f723..69d1b673 100644
--- a/lib/libc/gen/getdomainname.3
+++ b/lib/libc/gen/getdomainname.3
@@ -67,10 +67,7 @@ which has length
 This call is restricted to the super-user and
 is normally used only when the system is bootstrapped.
 .Sh RETURN VALUES
-If the call succeeds a value of 0 is returned.  If the call
-fails, a value of -1 is returned and an error code is
-placed in the global location
-.Va errno .
+.Rv -std
 .Sh ERRORS
 The following errors may be returned by these calls:
 .Bl -tag -width Er
diff --git a/lib/libc/gen/gethostname.3 b/lib/libc/gen/gethostname.3
index 605ccc7..76819b1 100644
--- a/lib/libc/gen/gethostname.3
+++ b/lib/libc/gen/gethostname.3
@@ -67,10 +67,7 @@ which has length
 This call is restricted to the super-user and
 is normally used only when the system is bootstrapped.
 .Sh RETURN VALUES
-If the call succeeds a value of 0 is returned.  If the call
-fails, a value of -1 is returned and an error code is
-placed in the global location
-.Va errno .
+.Rv -std
 .Sh ERRORS
 The following errors may be returned by these calls:
 .Bl -tag -width Er
diff --git a/lib/libc/gen/sem_wait.3 b/lib/libc/gen/sem_wait.3
index 61a21be..d015b90 100644
--- a/lib/libc/gen/sem_wait.3
+++ b/lib/libc/gen/sem_wait.3
@@ -57,14 +57,7 @@ function decrements (locks) the semaphore pointed to by
 only if the value is non-zero.  Otherwise, the semaphore is not decremented and
 an error is returned.
 .Sh RETURN VALUES
-If successful,
-.Fn sem_wait
-and
-.Fn sem_trywait
-return 0.  Otherwise, -1 is returned and
-.Va errno
-is set to indicate the type of
-error.
+.Rv -std
 .Sh ERRORS
 .Fn sem_wait
 and
diff --git a/lib/libc/gen/sysctl.3 b/lib/libc/gen/sysctl.3
index 062f60d..9551466 100644
--- a/lib/libc/gen/sysctl.3
+++ b/lib/libc/gen/sysctl.3
@@ -753,13 +753,7 @@ If the amount of free and cache memory falls below this value, the
 pageout daemon will enter "memory conserving mode" to avoid deadlock.
 .El
 .Sh RETURN VALUES
-.Fn sysctl
-and
-.Fn sysctlbyname
-return 0 when successful.
-Otherwise \-1 is returned and
-.Va errno
-is set appropriately.
+.Rv -std
 .Sh ERRORS
 The following errors may be reported:
 .Bl -tag -width Er