From 2910f183ddd5286911bc1e3499ea93cb57de8b75 Mon Sep 17 00:00:00 2001 From: David 'Digit' Turner Date: Mon, 10 May 2010 18:48:35 -0700 Subject: Upstream: Misc integration - includes qobject.h and related sources Change-Id: Idfa93ab5c67c95a3bc1869eeaf3a84a75fe24cd6 --- qfloat.c | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 qfloat.c (limited to 'qfloat.c') diff --git a/qfloat.c b/qfloat.c new file mode 100644 index 0000000..05215f5 --- /dev/null +++ b/qfloat.c @@ -0,0 +1,76 @@ +/* + * QFloat Module + * + * Copyright (C) 2009 Red Hat Inc. + * + * Authors: + * Luiz Capitulino + * + * This work is licensed under the terms of the GNU GPL, version 2. See + * the COPYING file in the top-level directory. + * + * Copyright IBM, Corp. 2009 + * + * Authors: + * Anthony Liguori + * + * This work is licensed under the terms of the GNU LGPL, version 2.1 or later. + * See the COPYING.LIB file in the top-level directory. + * + */ + +#include "qfloat.h" +#include "qobject.h" +#include "qemu-common.h" + +static void qfloat_destroy_obj(QObject *obj); + +static const QType qfloat_type = { + .code = QTYPE_QFLOAT, + .destroy = qfloat_destroy_obj, +}; + +/** + * qfloat_from_int(): Create a new QFloat from a float + * + * Return strong reference. + */ +QFloat *qfloat_from_double(double value) +{ + QFloat *qf; + + qf = qemu_malloc(sizeof(*qf)); + qf->value = value; + QOBJECT_INIT(qf, &qfloat_type); + + return qf; +} + +/** + * qfloat_get_double(): Get the stored float + */ +double qfloat_get_double(const QFloat *qf) +{ + return qf->value; +} + +/** + * qobject_to_qfloat(): Convert a QObject into a QFloat + */ +QFloat *qobject_to_qfloat(const QObject *obj) +{ + if (qobject_type(obj) != QTYPE_QFLOAT) + return NULL; + + return container_of(obj, QFloat, base); +} + +/** + * qfloat_destroy_obj(): Free all memory allocated by a + * QFloat object + */ +static void qfloat_destroy_obj(QObject *obj) +{ + assert(obj != NULL); + qemu_free(qobject_to_qfloat(obj)); +} -- cgit v1.1