Last change
on this file since 444 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
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File size:
1.2 KB
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1 | /* $NetBSD: creal.c,v 1.2 2010/09/15 16:11:29 christos Exp $ */ |
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2 | |
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3 | /* |
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4 | * Written by Matthias Drochner <drochner@NetBSD.org>. |
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5 | * Public domain. |
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6 | * |
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7 | * imported and modified include for newlib 2010/10/03 |
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8 | * Marco Atzeri <marco_atzeri@yahoo.it> |
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9 | */ |
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10 | |
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11 | /* |
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12 | FUNCTION |
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13 | <<creal>>, <<crealf>>, <<creall>>---real part |
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14 | |
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15 | INDEX |
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16 | creal |
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17 | INDEX |
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18 | crealf |
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19 | INDEX |
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20 | creall |
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21 | |
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22 | SYNOPSIS |
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23 | #include <complex.h> |
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24 | double creal(double complex <[z]>); |
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25 | float crealf(float complex <[z]>); |
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26 | double long creall(long double complex <[z]>); |
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27 | |
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28 | |
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29 | DESCRIPTION |
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30 | These functions compute the real part of <[z]>. |
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31 | |
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32 | <<crealf>> is identical to <<creal>>, except that it performs |
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33 | its calculations on <<float complex>>. |
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34 | |
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35 | <<creall>> is identical to <<creal>>, except that it performs |
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36 | its calculations on <<long double complex>>. |
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37 | |
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38 | RETURNS |
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39 | The creal* functions return the real part value. |
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40 | |
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41 | PORTABILITY |
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42 | <<creal>>, <<crealf>> and <<creall>> are ISO C99 |
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43 | |
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44 | QUICKREF |
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45 | <<creal>>, <<crealf>> and <<creall>> are ISO C99 |
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46 | |
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47 | */ |
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48 | |
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49 | |
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50 | #include <complex.h> |
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51 | #include "../common/fdlibm.h" |
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52 | |
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53 | double |
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54 | creal(double complex z) |
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55 | { |
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56 | double_complex w = { .z = z }; |
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57 | |
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58 | return (REAL_PART(w)); |
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59 | } |
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