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diff --git a/man3/atan2.3 b/man3/atan2.3 deleted file mode 100644 index f0df976fa..000000000 --- a/man3/atan2.3 +++ /dev/null @@ -1,174 +0,0 @@ -'\" t -.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) -.\" and Copyright 2008, Linux Foundation, written by Michael Kerrisk -.\" <mtk.manpages@gmail.com> -.\" -.\" SPDX-License-Identifier: Linux-man-pages-copyleft -.\" -.\" References consulted: -.\" Linux libc source code -.\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) -.\" 386BSD man pages -.\" Modified 1993-07-24 by Rik Faith (faith@cs.unc.edu) -.\" Modified 2002-07-27 by Walter Harms -.\" (walter.harms@informatik.uni-oldenburg.de) -.\" -.TH atan2 3 (date) "Linux man-pages (unreleased)" -.SH NAME -atan2, atan2f, atan2l \- arc tangent function of two variables -.SH LIBRARY -Math library -.RI ( libm ", " \-lm ) -.SH SYNOPSIS -.nf -.B #include <math.h> -.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 -.P -.RS -4 -Feature Test Macro Requirements for glibc (see -.BR feature_test_macros (7)): -.RE -.P -.BR atan2f (), -.BR atan2l (): -.nf - _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L - || /* Since glibc 2.19: */ _DEFAULT_SOURCE - || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE -.fi -.SH DESCRIPTION -These functions calculate the principal value of the arc tangent of -.IR y/x , -using the signs of the two arguments to determine -the quadrant of the result. -.SH RETURN VALUE -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]. -.P -If -.I y -is +0 (\-0) and -.I x -is less than 0, +pi (\-pi) is returned. -.P -If -.I y -is +0 (\-0) and -.I x -is greater than 0, +0 (\-0) is returned. -.P -If -.I y -is less than 0 and -.I x -is +0 or \-0, \-pi/2 is returned. -.P -If -.I y -is greater than 0 and -.I x -is +0 or \-0, pi/2 is returned. -.P -.\" POSIX.1 says: -.\" If -.\" .I x -.\" is 0, a pole error shall not occur. -.\" -If either -.I x -or -.I y -is NaN, a NaN is returned. -.P -.\" POSIX.1 says: -.\" If the result underflows, a range error may occur and -.\" .I y/x -.\" should be returned. -.\" -If -.I y -is +0 (\-0) and -.I x -is \-0, +pi (\-pi) is returned. -.P -If -.I y -is +0 (\-0) and -.I x -is +0, +0 (\-0) is returned. -.P -If -.I y -is a finite value greater (less) than 0, and -.I x -is negative infinity, +pi (\-pi) is returned. -.P -If -.I y -is a finite value greater (less) than 0, and -.I x -is positive infinity, +0 (\-0) is returned. -.P -If -.I y -is positive infinity (negative infinity), and -.I x -is finite, -pi/2 (\-pi/2) is returned. -.P -If -.I y -is positive infinity (negative infinity) and -.I x -is negative infinity, +3*pi/4 (\-3*pi/4) is returned. -.P -If -.I y -is positive infinity (negative infinity) and -.I x -is positive infinity, +pi/4 (\-pi/4) is returned. -.\" -.\" POSIX.1 says: -.\" If both arguments are 0, a domain error shall not occur. -.SH ERRORS -No errors occur. -.\" POSIX.1 documents an optional underflow error -.\" glibc 2.8 does not do this. -.SH ATTRIBUTES -For an explanation of the terms used in this section, see -.BR attributes (7). -.TS -allbox; -lbx lb lb -l l l. -Interface Attribute Value -T{ -.na -.nh -.BR atan2 (), -.BR atan2f (), -.BR atan2l () -T} Thread safety MT-Safe -.TE -.SH STANDARDS -C11, POSIX.1-2008. -.SH HISTORY -C99, POSIX.1-2001. -.P -The variant returning -.I double -also conforms to -SVr4, 4.3BSD, C89. -.SH SEE ALSO -.BR acos (3), -.BR asin (3), -.BR atan (3), -.BR carg (3), -.BR cos (3), -.BR sin (3), -.BR tan (3) |