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-rw-r--r--lib/msun/man/acos.32
-rw-r--r--lib/msun/man/acosh.32
-rw-r--r--lib/msun/man/asin.32
-rw-r--r--lib/msun/man/asinh.32
-rw-r--r--lib/msun/man/atan.32
-rw-r--r--lib/msun/man/atan2.32
-rw-r--r--lib/msun/man/atanh.32
-rw-r--r--lib/msun/man/ceil.32
-rw-r--r--lib/msun/man/copysign.32
-rw-r--r--lib/msun/man/cos.32
-rw-r--r--lib/msun/man/cosh.32
-rw-r--r--lib/msun/man/cospi.320
-rw-r--r--lib/msun/man/erf.315
-rw-r--r--lib/msun/man/exp.32
-rw-r--r--lib/msun/man/fabs.34
-rw-r--r--lib/msun/man/floor.32
-rw-r--r--lib/msun/man/fmod.32
-rw-r--r--lib/msun/man/hypot.32
-rw-r--r--lib/msun/man/ieee.32
-rw-r--r--lib/msun/man/ieee_test.32
-rw-r--r--lib/msun/man/ilogb.32
-rw-r--r--lib/msun/man/j0.32
-rw-r--r--lib/msun/man/lgamma.321
-rw-r--r--lib/msun/man/math.32
-rw-r--r--lib/msun/man/nextafter.32
-rw-r--r--lib/msun/man/remainder.32
-rw-r--r--lib/msun/man/rint.32
-rw-r--r--lib/msun/man/scalbn.32
-rw-r--r--lib/msun/man/sin.34
-rw-r--r--lib/msun/man/sinh.32
-rw-r--r--lib/msun/man/sinpi.314
-rw-r--r--lib/msun/man/sqrt.32
-rw-r--r--lib/msun/man/tan.32
-rw-r--r--lib/msun/man/tanh.32
-rw-r--r--lib/msun/man/tanpi.317
35 files changed, 39 insertions, 112 deletions
diff --git a/lib/msun/man/acos.3 b/lib/msun/man/acos.3
index b7b3a2eb7f17..e21687c1bb66 100644
--- a/lib/msun/man/acos.3
+++ b/lib/msun/man/acos.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)acos.3 5.1 (Berkeley) 5/2/91
-.\"
.Dd July 31, 2008
.Dt ACOS 3
.Os
diff --git a/lib/msun/man/acosh.3 b/lib/msun/man/acosh.3
index db0104b0bdd2..0268bde8e092 100644
--- a/lib/msun/man/acosh.3
+++ b/lib/msun/man/acosh.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)acosh.3 5.2 (Berkeley) 5/6/91
-.\"
.Dd June 9, 2013
.Dt ACOSH 3
.Os
diff --git a/lib/msun/man/asin.3 b/lib/msun/man/asin.3
index 03a9145ce065..20dc7ac1f54c 100644
--- a/lib/msun/man/asin.3
+++ b/lib/msun/man/asin.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)asin.3 5.1 (Berkeley) 5/2/91
-.\"
.Dd July 31, 2008
.Dt ASIN 3
.Os
diff --git a/lib/msun/man/asinh.3 b/lib/msun/man/asinh.3
index c706f2c14e46..66515fa6ac0b 100644
--- a/lib/msun/man/asinh.3
+++ b/lib/msun/man/asinh.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)asinh.3 6.4 (Berkeley) 5/6/91
-.\"
.Dd June 9, 2013
.Dt ASINH 3
.Os
diff --git a/lib/msun/man/atan.3 b/lib/msun/man/atan.3
index 0cda6fb2d8f9..d04787ce8bfe 100644
--- a/lib/msun/man/atan.3
+++ b/lib/msun/man/atan.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)atan.3 5.1 (Berkeley) 5/2/91
-.\"
.Dd July 31, 2008
.Dt ATAN 3
.Os
diff --git a/lib/msun/man/atan2.3 b/lib/msun/man/atan2.3
index df67200a002f..df023777ce71 100644
--- a/lib/msun/man/atan2.3
+++ b/lib/msun/man/atan2.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)atan2.3 5.1 (Berkeley) 5/2/91
-.\"
.Dd July 31, 2008
.Dt ATAN2 3
.Os
diff --git a/lib/msun/man/atanh.3 b/lib/msun/man/atanh.3
index a4c1061bd014..3fd9d2977d8f 100644
--- a/lib/msun/man/atanh.3
+++ b/lib/msun/man/atanh.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)atanh.3 5.2 (Berkeley) 5/6/91
-.\"
.Dd June 9, 2013
.Dt ATANH 3
.Os
diff --git a/lib/msun/man/ceil.3 b/lib/msun/man/ceil.3
index 61a63e2c5fd1..9a0a5be89f64 100644
--- a/lib/msun/man/ceil.3
+++ b/lib/msun/man/ceil.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)ceil.3 5.1 (Berkeley) 5/2/91
-.\"
.Dd January 13, 2005
.Dt CEIL 3
.Os
diff --git a/lib/msun/man/copysign.3 b/lib/msun/man/copysign.3
index 5d08bd5dd559..091164fbeda9 100644
--- a/lib/msun/man/copysign.3
+++ b/lib/msun/man/copysign.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)ieee.3 6.4 (Berkeley) 5/6/91
-.\"
.Dd January 26, 2005
.Dt COPYSIGN 3
.Os
diff --git a/lib/msun/man/cos.3 b/lib/msun/man/cos.3
index 68036ab7bb99..4b5223b37261 100644
--- a/lib/msun/man/cos.3
+++ b/lib/msun/man/cos.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)cos.3 5.1 (Berkeley) 5/2/91
-.\"
.Dd April 1, 2020
.Dt COS 3
.Os
diff --git a/lib/msun/man/cosh.3 b/lib/msun/man/cosh.3
index 45af312bd025..22105f259817 100644
--- a/lib/msun/man/cosh.3
+++ b/lib/msun/man/cosh.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)cosh.3 5.1 (Berkeley) 5/2/91
-.\"
.Dd April 3, 2022
.Dt COSH 3
.Os
diff --git a/lib/msun/man/cospi.3 b/lib/msun/man/cospi.3
index 5b33fe2555a1..86e63fb77498 100644
--- a/lib/msun/man/cospi.3
+++ b/lib/msun/man/cospi.3
@@ -62,27 +62,21 @@ where p is the floating\(enpoint precision of
.Ar x ,
then the returned value is 1 and it has no significance.
.Sh SPECIAL VALUES
-.Bl -tag
-.It
-.Fn cospi \*(Pm0
+.Bl -tag -width "cospi(+n/2)"
+.It Fn cospi \*(Pm0
returns 1.
-.It
-.Fn cospi \*(Pmn/2
+.It Fn cospi \*(Pmn/2
returns 0 for positive integers
.Ar n .
-.It
-.Fn cospi n
+.It Fn cospi n
returns 1 for even integers
.Ar n .
-.It
-.Fn cospi n
+.It Fn cospi n
returns \-1 for odd integers
.Ar n .
-.It
-.Fn cospi \*(Pm\(if
+.It Fn cospi \*(Pm\(if
return an \*(Na and raises an FE_INVALID exception.
-.It
-.Fn cospi \*(Na
+.It Fn cospi \*(Na
return an \*(Na and raises an FE_INVALID exception.
.El
.Sh SEE ALSO
diff --git a/lib/msun/man/erf.3 b/lib/msun/man/erf.3
index e0771863cca1..8d66017ed11c 100644
--- a/lib/msun/man/erf.3
+++ b/lib/msun/man/erf.3
@@ -25,9 +25,7 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)erf.3 6.4 (Berkeley) 4/20/91
-.\"
-.Dd July 13, 2014
+.Dd June 23, 2024
.Dt ERF 3
.Os
.Sh NAME
@@ -88,6 +86,17 @@ subtracts the result of the error function
from 1.0.
.Sh SEE ALSO
.Xr math 3
+.Sh STANDARDS
+The
+.Fn erf ,
+.Fn erff ,
+.Fn erfl ,
+.Fn erfc ,
+.Fn erfcf
+and
+.Fn erfcl
+functions conform to
+.St -isoC-99 .
.Sh HISTORY
The
.Fn erf
diff --git a/lib/msun/man/exp.3 b/lib/msun/man/exp.3
index b918f32dba6a..a94c372fa0f5 100644
--- a/lib/msun/man/exp.3
+++ b/lib/msun/man/exp.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)exp.3 6.12 (Berkeley) 7/31/91
-.\"
.Dd April 1, 2020
.Dt EXP 3
.Os
diff --git a/lib/msun/man/fabs.3 b/lib/msun/man/fabs.3
index 3ddf68ed2ef3..031b6aa54d18 100644
--- a/lib/msun/man/fabs.3
+++ b/lib/msun/man/fabs.3
@@ -1,7 +1,5 @@
.\" Copyright (c) 1991 The Regents of the University of California.
.\" All rights reserved.
-.\"
-.\" @(#)fabs.3 5.1 (Berkeley) 5/2/91
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
@@ -26,8 +24,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)fabs.3 5.1 (Berkeley) 5/2/91
-.\"
.Dd October 25, 2003
.Dt FABS 3
.Os
diff --git a/lib/msun/man/floor.3 b/lib/msun/man/floor.3
index 4bf3f4ddd971..b295d013035f 100644
--- a/lib/msun/man/floor.3
+++ b/lib/msun/man/floor.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)floor.3 6.5 (Berkeley) 4/19/91
-.\"
.Dd April 3, 2022
.Dt FLOOR 3
.Os
diff --git a/lib/msun/man/fmod.3 b/lib/msun/man/fmod.3
index bf7288d1a9c3..a7a5ae86df58 100644
--- a/lib/msun/man/fmod.3
+++ b/lib/msun/man/fmod.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)fmod.3 5.1 (Berkeley) 5/2/91
-.\"
.Dd April 3, 2022
.Dt FMOD 3
.Os
diff --git a/lib/msun/man/hypot.3 b/lib/msun/man/hypot.3
index 4ff901b14af5..7b8498757955 100644
--- a/lib/msun/man/hypot.3
+++ b/lib/msun/man/hypot.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)hypot.3 6.7 (Berkeley) 5/6/91
-.\"
.Dd March 30, 2008
.Dt HYPOT 3
.Os
diff --git a/lib/msun/man/ieee.3 b/lib/msun/man/ieee.3
index 398287da8606..aaf73efe6bf9 100644
--- a/lib/msun/man/ieee.3
+++ b/lib/msun/man/ieee.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)ieee.3 6.4 (Berkeley) 5/6/91
-.\"
.Dd January 26, 2005
.Dt IEEE 3
.Os
diff --git a/lib/msun/man/ieee_test.3 b/lib/msun/man/ieee_test.3
index 7a5b2abb2573..bae704eb22df 100644
--- a/lib/msun/man/ieee_test.3
+++ b/lib/msun/man/ieee_test.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)ieee.3 6.4 (Berkeley) 5/6/91
-.\"
.Dd November 6, 2005
.Dt IEEE_TEST 3
.Os
diff --git a/lib/msun/man/ilogb.3 b/lib/msun/man/ilogb.3
index e263f4f0a262..4d4523316afd 100644
--- a/lib/msun/man/ilogb.3
+++ b/lib/msun/man/ilogb.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)ieee.3 6.4 (Berkeley) 5/6/91
-.\"
.Dd December 16, 2007
.Dt ILOGB 3
.Os
diff --git a/lib/msun/man/j0.3 b/lib/msun/man/j0.3
index 804bc3678e8f..a5c58f03977a 100644
--- a/lib/msun/man/j0.3
+++ b/lib/msun/man/j0.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)j0.3 6.7 (Berkeley) 4/19/91
-.\"
.Dd March 10, 2015
.Dt J0 3
.Os
diff --git a/lib/msun/man/lgamma.3 b/lib/msun/man/lgamma.3
index cf80c9e7f365..41d680e41bda 100644
--- a/lib/msun/man/lgamma.3
+++ b/lib/msun/man/lgamma.3
@@ -25,9 +25,7 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)lgamma.3 6.6 (Berkeley) 12/3/92
-.\"
-.Dd December 8, 2017
+.Dd April 12, 2024
.Dt LGAMMA 3
.Os
.Sh NAME
@@ -169,15 +167,6 @@ non-positive integers.
For large non-integer negative values,
.Fn tgamma
will underflow.
-.Sh BUGS
-To conform with newer C/C++ standards, a stub implementation for
-.Nm tgammal
-was committed to the math library, where
-.Nm tgammal
-is mapped to
-.Nm tgamma .
-Thus, the numerical accuracy is at most that of the 53-bit double
-precision implementation.
.Sh SEE ALSO
.Xr math 3
.Sh STANDARDS
@@ -214,3 +203,11 @@ The
.Fn tgamma
function appeared in
.Fx 5.0 .
+The 128-bit
+.Ft long double
+version of
+.Fn tgammal
+replaced the 80-bit stub version in
+version in
+.Fx 14.1 ,
+thanks to an appropriate implementation from Arm.
diff --git a/lib/msun/man/math.3 b/lib/msun/man/math.3
index 0704918846a8..47353298bb54 100644
--- a/lib/msun/man/math.3
+++ b/lib/msun/man/math.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)math.3 6.10 (Berkeley) 5/6/91
-.\"
.Dd December 7, 2017
.Dt MATH 3
.Os
diff --git a/lib/msun/man/nextafter.3 b/lib/msun/man/nextafter.3
index 970e029b46b6..3282050f1d2e 100644
--- a/lib/msun/man/nextafter.3
+++ b/lib/msun/man/nextafter.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)ieee.3 6.4 (Berkeley) 5/6/91
-.\"
.Dd May 4, 2005
.Dt NEXTAFTER 3
.Os
diff --git a/lib/msun/man/remainder.3 b/lib/msun/man/remainder.3
index 9b8962b4907e..9c2d92f5e90c 100644
--- a/lib/msun/man/remainder.3
+++ b/lib/msun/man/remainder.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)ieee.3 6.4 (Berkeley) 5/6/91
-.\"
.Dd March 30, 2008
.Dt REMAINDER 3
.Os
diff --git a/lib/msun/man/rint.3 b/lib/msun/man/rint.3
index 385b5b51dc8a..399a0720b324 100644
--- a/lib/msun/man/rint.3
+++ b/lib/msun/man/rint.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)rint.3 5.1 (Berkeley) 5/2/91
-.\"
.Dd January 13, 2008
.Dt RINT 3
.Os
diff --git a/lib/msun/man/scalbn.3 b/lib/msun/man/scalbn.3
index 2c56f57f6793..9b14e1fcb3d4 100644
--- a/lib/msun/man/scalbn.3
+++ b/lib/msun/man/scalbn.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)ieee.3 6.4 (Berkeley) 5/6/91
-.\"
.Dd March 4, 2005
.Dt SCALBN 3
.Os
diff --git a/lib/msun/man/sin.3 b/lib/msun/man/sin.3
index a007be7fac31..376fc706dd2b 100644
--- a/lib/msun/man/sin.3
+++ b/lib/msun/man/sin.3
@@ -1,7 +1,5 @@
.\" Copyright (c) 1991 The Regents of the University of California.
.\" All rights reserved.
-.\"
-.\" @(#)sin.3 6.7 (Berkeley) 4/19/91
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
@@ -26,8 +24,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)sin.3 6.7 (Berkeley) 4/19/91
-.\"
.Dd April 1, 2020
.Dt SIN 3
.Os
diff --git a/lib/msun/man/sinh.3 b/lib/msun/man/sinh.3
index 71dcfbd59b10..7fb928028371 100644
--- a/lib/msun/man/sinh.3
+++ b/lib/msun/man/sinh.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)sinh.3 6.6 (Berkeley) 4/19/91
-.\"
.Dd April 3, 2022
.Dt SINH 3
.Os
diff --git a/lib/msun/man/sinpi.3 b/lib/msun/man/sinpi.3
index a5f514d3979f..63a1e3010de5 100644
--- a/lib/msun/man/sinpi.3
+++ b/lib/msun/man/sinpi.3
@@ -62,19 +62,15 @@ where p is the floating\(enpoint precision of
.Ar x ,
then the returned value is \*(Pm0 and it has no significance.
.Sh SPECIAL VALUES
-.Bl -tag
-.It
-.Fn sinpi \*(Pm0
+.Bl -tag -width "sinpi(NaN)"
+.It Fn sinpi \*(Pm0
returns \*(Pm0.
-.It
-.Fn sinpi \*(Pmn
+.It Fn sinpi \*(Pmn
returns \*(Pm0 for positive integers
.Ar n .
-.It
-.Fn sinpi \*(Pm\(if
+.It Fn sinpi \*(Pm\(if
return an \*(Na and raises an FE_INVALID exception.
-.It
-.Fn sinpi \*(Na
+.It Fn sinpi \*(Na
return an \*(Na and raises an FE_INVALID exception.
.El
.Sh SEE ALSO
diff --git a/lib/msun/man/sqrt.3 b/lib/msun/man/sqrt.3
index 9645160dfdae..f4a217353af0 100644
--- a/lib/msun/man/sqrt.3
+++ b/lib/msun/man/sqrt.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)sqrt.3 6.4 (Berkeley) 5/6/91
-.\"
.Dd February 15, 2020
.Dt SQRT 3
.Os
diff --git a/lib/msun/man/tan.3 b/lib/msun/man/tan.3
index 5a0226cf1156..8714d2429c2a 100644
--- a/lib/msun/man/tan.3
+++ b/lib/msun/man/tan.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)tan.3 5.1 (Berkeley) 5/2/91
-.\"
.Dd January 24, 2008
.Dt TAN 3
.Os
diff --git a/lib/msun/man/tanh.3 b/lib/msun/man/tanh.3
index 61ae7a0920b8..e795d0e7eba6 100644
--- a/lib/msun/man/tanh.3
+++ b/lib/msun/man/tanh.3
@@ -25,8 +25,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" from: @(#)tanh.3 5.1 (Berkeley) 5/2/91
-.\"
.Dd April 3, 2022
.Dt TANH 3
.Os
diff --git a/lib/msun/man/tanpi.3 b/lib/msun/man/tanpi.3
index 2b95f5daa8b1..b11d54031b71 100644
--- a/lib/msun/man/tanpi.3
+++ b/lib/msun/man/tanpi.3
@@ -62,22 +62,17 @@ where p is the floating\(enpoint precision of
.Ar x ,
then the returned value is \*(Pm0 and it has no significance.
.Sh SPECIAL VALUES
-.Bl -tag
-.It
-.Fn tanpi \*(Pm0
+.Bl -tag -width "tanpi(+n/2)"
+.It Fn tanpi \*(Pm0
returns \*(Pm0.
-.It
-.Fn tanpi \*(Pmn
+.It Fn tanpi \*(Pmn
returns \*(Pm0 for positive integers
.Ar n .
-.It
-.Fn tanpi \*(Pmn/2
+.It Fn tanpi \*(Pmn/2
returns \*(Na for n > 0 and raises an FE_INVALID exception.
-.It
-.Fn tanpi \*(Pm\(if
+.It Fn tanpi \*(Pm\(if
return an \*(Na and raises an FE_INVALID exception.
-.It
-.Fn tanpi \*(Na
+.It Fn tanpi \*(Na
return an \*(Na and raises an FE_INVALID exception.
.El
.Sh SEE ALSO