diff options
Diffstat (limited to 'man7/complex.7')
| -rw-r--r-- | man7/complex.7 | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/man7/complex.7 b/man7/complex.7 index 3685a8d..a61551e 100644 --- a/man7/complex.7 +++ b/man7/complex.7 @@ -2,7 +2,7 @@ .\" .\" SPDX-License-Identifier: GPL-1.0-or-later .\" -.TH complex 7 2023-07-18 "Linux man-pages 6.05.01" +.TH complex 7 2023-10-31 "Linux man-pages 6.7" .SH NAME complex \- basics of complex mathematics .SH LIBRARY @@ -15,7 +15,7 @@ Math library .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 +.P 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 @@ -25,7 +25,7 @@ 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 +.P 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 @@ -33,13 +33,13 @@ The basic operations are defined on z = a+b*i and w = c+d*i as: .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 +.P 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. The imaginary unit is represented by I. -.PP +.P .EX /* check that exp(i * pi) == \-1 */ #include <math.h> /* for atan */ |