xref: /OK3568_Linux_fs/u-boot/post/lib_powerpc/fpu/20010226-1.c (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun  * Copyright (C) 2007
3*4882a593Smuzhiyun  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4*4882a593Smuzhiyun  *
5*4882a593Smuzhiyun  * SPDX-License-Identifier:	GPL-2.0+
6*4882a593Smuzhiyun  */
7*4882a593Smuzhiyun /*
8*4882a593Smuzhiyun  * This file is originally a part of the GCC testsuite.
9*4882a593Smuzhiyun  */
10*4882a593Smuzhiyun 
11*4882a593Smuzhiyun #include <common.h>
12*4882a593Smuzhiyun 
13*4882a593Smuzhiyun #include <post.h>
14*4882a593Smuzhiyun 
15*4882a593Smuzhiyun GNU_FPOST_ATTR
16*4882a593Smuzhiyun 
17*4882a593Smuzhiyun #if CONFIG_POST & CONFIG_SYS_POST_FPU
18*4882a593Smuzhiyun 
fpu_post_test_math3(void)19*4882a593Smuzhiyun int fpu_post_test_math3 (void)
20*4882a593Smuzhiyun {
21*4882a593Smuzhiyun 	volatile long double dfrom = 1.1;
22*4882a593Smuzhiyun 	volatile long double m1;
23*4882a593Smuzhiyun 	volatile long double m2;
24*4882a593Smuzhiyun 	volatile unsigned long mant_long;
25*4882a593Smuzhiyun 
26*4882a593Smuzhiyun 	m1 = dfrom / 2.0;
27*4882a593Smuzhiyun 	m2 = m1 * 4294967296.0;
28*4882a593Smuzhiyun 	mant_long = ((unsigned long) m2) & 0xffffffff;
29*4882a593Smuzhiyun 
30*4882a593Smuzhiyun 	if (mant_long != 0x8ccccccc) {
31*4882a593Smuzhiyun 		post_log ("Error in FPU math3 test\n");
32*4882a593Smuzhiyun 		return -1;
33*4882a593Smuzhiyun 	}
34*4882a593Smuzhiyun 	return 0;
35*4882a593Smuzhiyun }
36*4882a593Smuzhiyun 
37*4882a593Smuzhiyun #endif /* CONFIG_POST & CONFIG_SYS_POST_FPU */
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