| The Android Open Source Project | a27d2ba | 2008-10-21 07:00:00 -0700 | [diff] [blame^] | 1 | .\" Copyright (c) 2004 Stefan Farfeleder |
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| 25 | .\" $FreeBSD: src/lib/msun/man/cimag.3,v 1.2 2005/01/13 10:43:01 ru Exp $ |
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| 27 | .Dd August 7, 2004 |
| 28 | .Dt CIMAG 3 |
| 29 | .Os |
| 30 | .Sh NAME |
| 31 | .Nm cimag , cimagf , cimagl , |
| 32 | .Nm conj , conjf , conjl , |
| 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" |
| 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 |
| 58 | Let |
| 59 | .Sm off |
| 60 | .Fa a + b * Em i |
| 61 | .Sm on |
| 62 | denote the complex number |
| 63 | .Fa z . |
| 64 | .Pp |
| 65 | The |
| 66 | .Fn cimag |
| 67 | functions return the imaginary part |
| 68 | .Fa b . |
| 69 | .Pp |
| 70 | The |
| 71 | .Fn conj |
| 72 | functions return the complex conjugate |
| 73 | .Sm off |
| 74 | .Fa a - b * Em i . |
| 75 | .Sm on |
| 76 | .Pp |
| 77 | The |
| 78 | .Fn creal |
| 79 | functions return the real part |
| 80 | .Fa a . |
| 81 | .Sh STANDARDS |
| 82 | The |
| 83 | .Fn cimag , |
| 84 | .Fn conj |
| 85 | and |
| 86 | .Fn creal |
| 87 | functions conform to |
| 88 | .St -isoC-99 . |
| 89 | .Sh HISTORY |
| 90 | The |
| 91 | .Fn cimag , |
| 92 | .Fn conj |
| 93 | and |
| 94 | .Fn creal |
| 95 | functions first appeared in |
| 96 | .Fx 5.3 . |