1 /* 2 * QFloat Module 3 * 4 * Copyright IBM, Corp. 2009 5 * 6 * Authors: 7 * Anthony Liguori <aliguori (at) us.ibm.com> 8 * 9 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later. 10 * See the COPYING.LIB file in the top-level directory. 11 * 12 */ 13 14 #include "qfloat.h" 15 #include "qobject.h" 16 #include "qemu-common.h" 17 18 static void qfloat_destroy_obj(QObject *obj); 19 20 static const QType qfloat_type = { 21 .code = QTYPE_QFLOAT, 22 .destroy = qfloat_destroy_obj, 23 }; 24 25 /** 26 * qfloat_from_int(): Create a new QFloat from a float 27 * 28 * Return strong reference. 29 */ 30 QFloat *qfloat_from_double(double value) 31 { 32 QFloat *qf; 33 34 qf = qemu_malloc(sizeof(*qf)); 35 qf->value = value; 36 QOBJECT_INIT(qf, &qfloat_type); 37 38 return qf; 39 } 40 41 /** 42 * qfloat_get_double(): Get the stored float 43 */ 44 double qfloat_get_double(const QFloat *qf) 45 { 46 return qf->value; 47 } 48 49 /** 50 * qobject_to_qfloat(): Convert a QObject into a QFloat 51 */ 52 QFloat *qobject_to_qfloat(const QObject *obj) 53 { 54 if (qobject_type(obj) != QTYPE_QFLOAT) 55 return NULL; 56 57 return container_of(obj, QFloat, base); 58 } 59 60 /** 61 * qfloat_destroy_obj(): Free all memory allocated by a 62 * QFloat object 63 */ 64 static void qfloat_destroy_obj(QObject *obj) 65 { 66 assert(obj != NULL); 67 qemu_free(qobject_to_qfloat(obj)); 68 } 69
