| cimag.3 (140177) | cimag.3 (181377) |
|---|---|
| 1.\" Copyright (c) 2004 Stefan Farfeleder 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 8 unchanged lines hidden (view full) --- 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" | 1.\" Copyright (c) 2004 Stefan Farfeleder 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 8 unchanged lines hidden (view full) --- 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" |
| 25.\" $FreeBSD: head/lib/msun/man/cimag.3 140177 2005-01-13 10:43:01Z ru $ | 25.\" $FreeBSD: head/lib/msun/man/cimag.3 181377 2008-08-07 15:07:48Z das $ |
| 26.\" | 26.\" |
| 27.Dd August 7, 2004 | 27.Dd August 7, 2008 |
| 28.Dt CIMAG 3 29.Os 30.Sh NAME 31.Nm cimag , cimagf , cimagl , 32.Nm conj , conjf , conjl , | 28.Dt CIMAG 3 29.Os 30.Sh NAME 31.Nm cimag , cimagf , cimagl , 32.Nm conj , conjf , conjl , |
| 33.Nm cproj , cprojf , cprojl , |
|
| 33.Nm creal , crealf , creall 34.Nd "functions to manipulate complex numbers" 35.Sh LIBRARY 36.Lb libm 37.Sh SYNOPSIS 38.In complex.h 39.Ft double 40.Fn cimag "double complex z" 41.Ft float 42.Fn cimagf "float complex z" 43.Ft "long double" 44.Fn cimagl "long double complex z" 45.Ft "double complex" 46.Fn conj "double complex z" 47.Ft "float complex" 48.Fn conjf "float complex z" 49.Ft "long double complex" 50.Fn conjl "long double complex z" | 34.Nm creal , crealf , creall 35.Nd "functions to manipulate complex numbers" 36.Sh LIBRARY 37.Lb libm 38.Sh SYNOPSIS 39.In complex.h 40.Ft double 41.Fn cimag "double complex z" 42.Ft float 43.Fn cimagf "float complex z" 44.Ft "long double" 45.Fn cimagl "long double complex z" 46.Ft "double complex" 47.Fn conj "double complex z" 48.Ft "float complex" 49.Fn conjf "float complex z" 50.Ft "long double complex" 51.Fn conjl "long double complex z" |
| 52.Ft "double complex" 53.Fn cproj "double complex z" 54.Ft "float complex" 55.Fn cprojf "float complex z" 56.Ft "long double complex" 57.Fn cprojl "long double complex z" |
|
| 51.Ft double 52.Fn creal "double complex z" 53.Ft float 54.Fn crealf "float complex z" 55.Ft "long double" 56.Fn creall "long double complex z" 57.Sh DESCRIPTION 58Let 59.Sm off 60.Fa a + b * Em i 61.Sm on 62denote the complex number 63.Fa z . 64.Pp 65The | 58.Ft double 59.Fn creal "double complex z" 60.Ft float 61.Fn crealf "float complex z" 62.Ft "long double" 63.Fn creall "long double complex z" 64.Sh DESCRIPTION 65Let 66.Sm off 67.Fa a + b * Em i 68.Sm on 69denote the complex number 70.Fa z . 71.Pp 72The |
| 73.Fn creal 74functions return the real part 75.Fa a , 76and the |
|
| 66.Fn cimag 67functions return the imaginary part 68.Fa b . 69.Pp 70The 71.Fn conj 72functions return the complex conjugate 73.Sm off 74.Fa a - b * Em i . 75.Sm on 76.Pp 77The | 77.Fn cimag 78functions return the imaginary part 79.Fa b . 80.Pp 81The 82.Fn conj 83functions return the complex conjugate 84.Sm off 85.Fa a - b * Em i . 86.Sm on 87.Pp 88The |
| 78.Fn creal 79functions return the real part 80.Fa a . | 89.Fn cproj 90functions return the projection onto the Riemann sphere. 91If 92.Fa z 93contains an infinite component, then the result is 94.Fa \*(If \*(Pm 0 Ns * Ns Em i , 95where the (zero) imaginary part of the result has the same sign as 96.Fa b . 97Otherwise, the result is 98.Fa z . 99.Pp 100These functions do not signal any floating point exceptions. |
| 81.Sh STANDARDS 82The 83.Fn cimag , | 101.Sh STANDARDS 102The 103.Fn cimag , |
| 84.Fn conj | 104.Fn conj , 105.Fn cproj , |
| 85and 86.Fn creal 87functions conform to 88.St -isoC-99 . 89.Sh HISTORY 90The 91.Fn cimag , 92.Fn conj 93and 94.Fn creal 95functions first appeared in 96.Fx 5.3 . | 106and 107.Fn creal 108functions conform to 109.St -isoC-99 . 110.Sh HISTORY 111The 112.Fn cimag , 113.Fn conj 114and 115.Fn creal 116functions first appeared in 117.Fx 5.3 . |
| 118The 119.Fn cproj 120functions appeared in 121.Fx 8.0. |
|