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| author | Alejandro Colomar <alx.manpages@gmail.com> | 2022-09-09 14:15:08 +0200 |
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| committer | Alejandro Colomar <alx.manpages@gmail.com> | 2022-09-09 14:15:08 +0200 |
| commit | 96e72ec1fbadd13cbcbc2b263540e4f5e9e09d7c (patch) | |
| tree | 70686b943e33a6e939ad265acb7ddfef70b91f32 /man/man7/complex.7 | |
| parent | 8f4ed6463206e8ede815c72085c7305dafc2e4fc (diff) | |
| download | man-pages-96e72ec1fbadd13cbcbc2b263540e4f5e9e09d7c.tar.gz | |
Revert "src.mk, All pages: Move man* to man/"
This reverts commit 70ac1c4785fc1e158ab2349a962dba2526bf4fbc.
Link: <https://lore.kernel.org/linux-man/YxcV4h+Xn7cd6+q2@pevik/T/>
Reported-by: Petr Vorel <pvorel@suse.cz>
Reported-by: Jakub Wilk <jwilk@jwilk.net>
Cc: Stefan Puiu <stefan.puiu@gmail.com>
Signed-off-by: Alex Colomar <alx.manpages@gmail.com>
Diffstat (limited to 'man/man7/complex.7')
| -rw-r--r-- | man/man7/complex.7 | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/man/man7/complex.7 b/man/man7/complex.7 deleted file mode 100644 index 66ea8b7074..0000000000 --- a/man/man7/complex.7 +++ /dev/null @@ -1,81 +0,0 @@ -.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de) -.\" -.\" SPDX-License-Identifier: GPL-1.0-or-later -.\" -.TH COMPLEX 7 2021-03-22 "Linux man-pages (unreleased)" -.SH NAME -complex \- basics of complex mathematics -.SH SYNOPSIS -.nf -.B #include <complex.h> -.fi -.SH DESCRIPTION -Complex numbers are numbers of the form z = a+b*i, where a and b are -real numbers and i = sqrt(\-1), so that i*i = \-1. -.PP -There are other ways to represent that number. -The pair (a,b) of real -numbers may be viewed as a point in the plane, given by X- and -Y-coordinates. -This same point may also be described by giving -the pair of real numbers (r,phi), where r is the distance to the origin O, -and phi the angle between the X-axis and the line Oz. -Now -z = r*exp(i*phi) = r*(cos(phi)+i*sin(phi)). -.PP -The basic operations are defined on z = a+b*i and w = c+d*i as: -.TP -.B addition: z+w = (a+c) + (b+d)*i -.TP -.B multiplication: z*w = (a*c \- b*d) + (a*d + b*c)*i -.TP -.B division: z/w = ((a*c + b*d)/(c*c + d*d)) + ((b*c \- a*d)/(c*c + d*d))*i -.PP -Nearly all math function have a complex counterpart but there are -some complex-only functions. -.SH EXAMPLES -Your C-compiler can work with complex numbers if it supports the C99 standard. -Link with \fI\-lm\fP. -The imaginary unit is represented by I. -.PP -.EX -/* check that exp(i * pi) == \-1 */ -#include <math.h> /* for atan */ -#include <stdio.h> -#include <complex.h> - -int -main(void) -{ - double pi = 4 * atan(1.0); - double complex z = cexp(I * pi); - printf("%f + %f * i\en", creal(z), cimag(z)); -} -.EE -.SH SEE ALSO -.BR cabs (3), -.BR cacos (3), -.BR cacosh (3), -.BR carg (3), -.BR casin (3), -.BR casinh (3), -.BR catan (3), -.BR catanh (3), -.BR ccos (3), -.BR ccosh (3), -.BR cerf (3), -.BR cexp (3), -.BR cexp2 (3), -.BR cimag (3), -.BR clog (3), -.BR clog10 (3), -.BR clog2 (3), -.BR conj (3), -.BR cpow (3), -.BR cproj (3), -.BR creal (3), -.BR csin (3), -.BR csinh (3), -.BR csqrt (3), -.BR ctan (3), -.BR ctanh (3) |