xref: /OK3568_Linux_fs/u-boot/post/lib_powerpc/fpu/20010114-2.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 
rintf(float x)19*4882a593Smuzhiyun static float rintf (float x)
20*4882a593Smuzhiyun {
21*4882a593Smuzhiyun 	volatile float TWO23 = 8388608.0;
22*4882a593Smuzhiyun 
23*4882a593Smuzhiyun 	if (__builtin_fabs (x) < TWO23)
24*4882a593Smuzhiyun 	{
25*4882a593Smuzhiyun 		if (x > 0.0)
26*4882a593Smuzhiyun 		{
27*4882a593Smuzhiyun 			x += TWO23;
28*4882a593Smuzhiyun 			x -= TWO23;
29*4882a593Smuzhiyun 		}
30*4882a593Smuzhiyun 		else if (x < 0.0)
31*4882a593Smuzhiyun 		{
32*4882a593Smuzhiyun 			x = TWO23 - x;
33*4882a593Smuzhiyun 			x = -(x - TWO23);
34*4882a593Smuzhiyun 		}
35*4882a593Smuzhiyun 	}
36*4882a593Smuzhiyun 
37*4882a593Smuzhiyun 	return x;
38*4882a593Smuzhiyun }
39*4882a593Smuzhiyun 
fpu_post_test_math2(void)40*4882a593Smuzhiyun int fpu_post_test_math2 (void)
41*4882a593Smuzhiyun {
42*4882a593Smuzhiyun 	if (rintf (-1.5) != -2.0) {
43*4882a593Smuzhiyun 		post_log ("Error in FPU math2 test\n");
44*4882a593Smuzhiyun 		return -1;
45*4882a593Smuzhiyun 	}
46*4882a593Smuzhiyun 	return 0;
47*4882a593Smuzhiyun }
48*4882a593Smuzhiyun 
49*4882a593Smuzhiyun #endif /* CONFIG_POST & CONFIG_SYS_POST_FPU */
50