Merging upstream version 4.23.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 15 insertions, 15 deletions

diff --git a/upstream/debian-unstable/man3/logb.3 b/upstream/debian-unstable/man3/logb.3
index 1bde61bb..965561c2 100644
--- a/upstream/debian-unstable/man3/logb.3
+++ b/upstream/debian-unstable/man3/logb.3
@@ -7,7 +7,7 @@
 .\"
 .\" Inspired by a page by Walter Harms created 2002-08-10
 .\"
-.TH logb 3 2023-07-20 "Linux man-pages 6.05.01"
+.TH logb 3 2024-05-02 "Linux man-pages 6.8"
 .SH NAME
 logb, logbf, logbl \- get exponent of a floating-point value
 .SH LIBRARY
@@ -16,17 +16,17 @@ Math library
 .SH SYNOPSIS
 .nf
 .B #include <math.h>
-.PP
+.P
 .BI "double logb(double " x );
 .BI "float logbf(float " x );
 .BI "long double logbl(long double " x );
 .fi
-.PP
+.P
 .RS -4
 Feature Test Macro Requirements for glibc (see
 .BR feature_test_macros (7)):
 .RE
-.PP
+.P
 .BR logb ():
 .nf
     _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
@@ -35,7 +35,7 @@ Feature Test Macro Requirements for glibc (see
         || /* Since glibc 2.19: */ _DEFAULT_SOURCE
         || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
 .fi
-.PP
+.P
 .BR logbf (),
 .BR logbl ():
 .nf
@@ -57,10 +57,11 @@ If
 .B FLT_RADIX
 is 2,
 .BI logb( x )
-is equal to
-.BI floor(log2( x ))\fR,
-except that it is probably faster.
-.PP
+is similar to
+.BI floor(log2(fabs( x )))\f[R],\f[]
+except that the latter may give an incorrect integer
+due to intermediate rounding.
+.P
 If
 .I x
 is subnormal,
@@ -71,12 +72,12 @@ would have if it were normalized.
 .SH RETURN VALUE
 On success, these functions return the exponent of
 .IR x .
-.PP
+.P
 If
 .I x
 is a NaN,
 a NaN is returned.
-.PP
+.P
 If
 .I x
 is zero, then a pole error occurs, and the functions return
@@ -85,7 +86,7 @@ is zero, then a pole error occurs, and the functions return
 or
 .RB \- HUGE_VALL ,
 respectively.
-.PP
+.P
 If
 .I x
 is negative infinity or positive infinity, then
@@ -95,7 +96,7 @@ See
 .BR math_error (7)
 for information on how to determine whether an error has occurred
 when calling these functions.
-.PP
+.P
 The following errors can occur:
 .TP
 Pole error: \fIx\fP is 0
@@ -105,7 +106,7 @@ Pole error: \fIx\fP is 0
 A divide-by-zero floating-point exception
 .RB ( FE_DIVBYZERO )
 is raised.
-.PP
+.P
 These functions do not set
 .IR errno .
 .\" FIXME . Is it intentional that these functions do not set errno?
@@ -128,7 +129,6 @@ T{
 .BR logbl ()
 T}	Thread safety	MT-Safe
 .TE
-.sp 1
 .SH STANDARDS
 C11, POSIX.1-2008.
 .SH HISTORY