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Diffstat (limited to 'man3/catan.3')
-rw-r--r-- | man3/catan.3 | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/man3/catan.3 b/man3/catan.3 deleted file mode 100644 index 4bba036..0000000 --- a/man3/catan.3 +++ /dev/null @@ -1,94 +0,0 @@ -'\" t -.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de) -.\" and Copyright (C) 2011 Michael Kerrisk <mtk.manpages@gmail.com> -.\" -.\" SPDX-License-Identifier: GPL-1.0-or-later -.\" -.TH catan 3 2023-11-01 "Linux man-pages 6.7" -.SH NAME -catan, catanf, catanl \- complex arc tangents -.SH LIBRARY -Math library -.RI ( libm ", " \-lm ) -.SH SYNOPSIS -.nf -.B #include <complex.h> -.P -.BI "double complex catan(double complex " z ); -.BI "float complex catanf(float complex " z ); -.BI "long double complex catanl(long double complex " z ); -.fi -.SH DESCRIPTION -These functions calculate the complex arc tangent of -.IR z . -If \fIy\~=\~catan(z)\fP, then \fIz\~=\~ctan(y)\fP. -The real part of -.I y -is chosen in the interval [\-pi/2, pi/2]. -.P -One has: -.P -.in +4n -.EX -catan(z) = (clog(1 + i * z) \- clog(1 \- i * z)) / (2 * i) -.EE -.in -.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 catan (), -.BR catanf (), -.BR catanl () -T} Thread safety MT-Safe -.TE -.SH STANDARDS -C11, POSIX.1-2008. -.SH HISTORY -glibc 2.1. -C99, POSIX.1-2001. -.SH EXAMPLES -.\" SRC BEGIN (catan.c) -.EX -/* Link with "\-lm" */ -\& -#include <complex.h> -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -\& -int -main(int argc, char *argv[]) -{ - double complex z, c, f; - double complex i = I; -\& - if (argc != 3) { - fprintf(stderr, "Usage: %s <real> <imag>\en", argv[0]); - exit(EXIT_FAILURE); - } -\& - z = atof(argv[1]) + atof(argv[2]) * I; -\& - c = catan(z); - printf("catan() = %6.3f %6.3f*i\en", creal(c), cimag(c)); -\& - f = (clog(1 + i * z) \- clog(1 \- i * z)) / (2 * i); - printf("formula = %6.3f %6.3f*i\en", creal(f), cimag(f)); -\& - exit(EXIT_SUCCESS); -} -.EE -.\" SRC END -.SH SEE ALSO -.BR ccos (3), -.BR clog (3), -.BR ctan (3), -.BR complex (7) |