xref: /PHP-7.0/Zend/zend_float.c (revision 478f119a)
1 /*
2    +----------------------------------------------------------------------+
3    | Zend Engine                                                          |
4    +----------------------------------------------------------------------+
5    | Copyright (c) 1998-2017 Zend Technologies Ltd. (http://www.zend.com) |
6    +----------------------------------------------------------------------+
7    | This source file is subject to version 2.00 of the Zend license,     |
8    | that is bundled with this package in the file LICENSE, and is        |
9    | available through the world-wide-web at the following url:           |
10    | http://www.zend.com/license/2_00.txt.                                |
11    | If you did not receive a copy of the Zend license and are unable to  |
12    | obtain it through the world-wide-web, please send a note to          |
13    | license@zend.com so we can mail you a copy immediately.              |
14    +----------------------------------------------------------------------+
15    | Authors: Christian Seiler <chris_se@gmx.net>                         |
16    +----------------------------------------------------------------------+
17 */
18 
19 /* $Id$ */
20 
21 #include "zend.h"
22 #include "zend_compile.h"
23 #include "zend_float.h"
24 
zend_init_fpu(void)25 ZEND_API void zend_init_fpu(void) /* {{{ */
26 {
27 #if XPFPA_HAVE_CW
28 	XPFPA_DECLARE
29 
30 	if (!EG(saved_fpu_cw_ptr)) {
31 		EG(saved_fpu_cw_ptr) = (void*)&EG(saved_fpu_cw);
32 	}
33 	XPFPA_STORE_CW(EG(saved_fpu_cw_ptr));
34 	XPFPA_SWITCH_DOUBLE();
35 #else
36 	EG(saved_fpu_cw_ptr) = NULL;
37 #endif
38 }
39 /* }}} */
40 
zend_shutdown_fpu(void)41 ZEND_API void zend_shutdown_fpu(void) /* {{{ */
42 {
43 #if XPFPA_HAVE_CW
44 	if (EG(saved_fpu_cw_ptr)) {
45 		XPFPA_RESTORE_CW(EG(saved_fpu_cw_ptr));
46 	}
47 #endif
48 	EG(saved_fpu_cw_ptr) = NULL;
49 }
50 /* }}} */
51 
zend_ensure_fpu_mode(void)52 ZEND_API void zend_ensure_fpu_mode(void) /* {{{ */
53 {
54 	XPFPA_DECLARE
55 
56 	XPFPA_SWITCH_DOUBLE();
57 }
58 /* }}} */
59