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54 lines
986 B
C
54 lines
986 B
C
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/* $NetBSD: creal.c,v 1.2 2010/09/15 16:11:29 christos Exp $ */
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/*
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* Written by Matthias Drochner <drochner@NetBSD.org>.
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* Public domain.
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*
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* imported and modified include for newlib 2010/10/03
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* Marco Atzeri <marco_atzeri@yahoo.it>
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*/
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/*
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FUNCTION
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<<creal>>, <<crealf>>---real part
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INDEX
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creal
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INDEX
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crealf
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ANSI_SYNOPSIS
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#include <complex.h>
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double creal(double complex <[z]>);
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float crealf(float complex <[z]>);
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DESCRIPTION
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These functions compute the real part of <[z]>.
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<<crealf>> is identical to <<creal>>, except that it performs
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its calculations on <<floats complex>>.
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RETURNS
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The creal functions return the real part value.
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PORTABILITY
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<<creal>> and <<crealf>> are ISO C99
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QUICKREF
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<<creal>> and <<crealf>> are ISO C99
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*/
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#include <complex.h>
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#include "../common/fdlibm.h"
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double
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creal(double complex z)
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{
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double_complex w = { .z = z };
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return (REAL_PART(w));
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}
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