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-rw-r--r--man3/atan2.335
1 files changed, 17 insertions, 18 deletions
diff --git a/man3/atan2.3 b/man3/atan2.3
index 0532b47..9ac661b 100644
--- a/man3/atan2.3
+++ b/man3/atan2.3
@@ -13,7 +13,7 @@
.\" Modified 2002-07-27 by Walter Harms
.\" (walter.harms@informatik.uni-oldenburg.de)
.\"
-.TH atan2 3 2023-07-20 "Linux man-pages 6.05.01"
+.TH atan2 3 2023-10-31 "Linux man-pages 6.7"
.SH NAME
atan2, atan2f, atan2l \- arc tangent function of two variables
.SH LIBRARY
@@ -22,17 +22,17 @@ Math library
.SH SYNOPSIS
.nf
.B #include <math.h>
-.PP
+.P
.BI "double atan2(double " y ", double " x );
.BI "float atan2f(float " y ", float " x );
.BI "long double atan2l(long double " y ", long double " x );
.fi
-.PP
+.P
.RS -4
Feature Test Macro Requirements for glibc (see
.BR feature_test_macros (7)):
.RE
-.PP
+.P
.BR atan2f (),
.BR atan2l ():
.nf
@@ -49,31 +49,31 @@ the quadrant of the result.
On success, these functions return the principal value of the arc tangent of
.I y/x
in radians; the return value is in the range [\-pi,\ pi].
-.PP
+.P
If
.I y
is +0 (\-0) and
.I x
is less than 0, +pi (\-pi) is returned.
-.PP
+.P
If
.I y
is +0 (\-0) and
.I x
is greater than 0, +0 (\-0) is returned.
-.PP
+.P
If
.I y
is less than 0 and
.I x
is +0 or \-0, \-pi/2 is returned.
-.PP
+.P
If
.I y
is greater than 0 and
.I x
is +0 or \-0, pi/2 is returned.
-.PP
+.P
.\" POSIX.1 says:
.\" If
.\" .I x
@@ -84,7 +84,7 @@ If either
or
.I y
is NaN, a NaN is returned.
-.PP
+.P
.\" POSIX.1 says:
.\" If the result underflows, a range error may occur and
.\" .I y/x
@@ -95,38 +95,38 @@ If
is +0 (\-0) and
.I x
is \-0, +pi (\-pi) is returned.
-.PP
+.P
If
.I y
is +0 (\-0) and
.I x
is +0, +0 (\-0) is returned.
-.PP
+.P
If
.I y
is a finite value greater (less) than 0, and
.I x
is negative infinity, +pi (\-pi) is returned.
-.PP
+.P
If
.I y
is a finite value greater (less) than 0, and
.I x
is positive infinity, +0 (\-0) is returned.
-.PP
+.P
If
.I y
is positive infinity (negative infinity), and
.I x
is finite,
pi/2 (\-pi/2) is returned.
-.PP
+.P
If
.I y
is positive infinity (negative infinity) and
.I x
is negative infinity, +3*pi/4 (\-3*pi/4) is returned.
-.PP
+.P
If
.I y
is positive infinity (negative infinity) and
@@ -155,12 +155,11 @@ T{
.BR atan2l ()
T} Thread safety MT-Safe
.TE
-.sp 1
.SH STANDARDS
C11, POSIX.1-2008.
.SH HISTORY
C99, POSIX.1-2001.
-.PP
+.P
The variant returning
.I double
also conforms to