blob: c346879a4b3d2f4987c580c41e2f789a63b47131 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
#include <stdio.h>
#include <math.h>
#include <stdlib.h>
float no1,no2,no3,no4,no5,no6,no7;
float result,resultd,resultld;
float *float_memory;
long double ldx = 88888888888888888888.88, ldy = 9999999999999999999.99;
double x = 100.345, y = 25.7789;
/* marks FPU stack as empty */
void empty_fpu_stack()
{
asm ("ffree %st(1) \n\t"
"ffree %st(2) \n\t"
"ffree %st(3) \n\t"
"ffree %st(4) \n\t"
"ffree %st(5) \n\t"
"ffree %st(6) \n\t"
"ffree %st(7)");
}
/* initialization of floats */
void init_floats()
{
no1 = 10.45;
no2 = 20.77;
no3 = 156.89874646;
no4 = 14.56;
no5 = 11.11;
no6 = 66.77;
no7 = 88.88;
float_memory = malloc(sizeof(float) * 4);
*float_memory = 256.256;
*(float_memory + 1) = 356.356;
*(float_memory + 2) = 456.456;
*(float_memory + 3) = 556.556;
}
int main()
{
init_floats();
empty_fpu_stack(); /* BEGIN I387-FLOAT-REVERSE */
asm("nop"); /* TEST ENV */
asm ("fsave %0" : "=m"(*float_memory) : );
asm ("frstor %0" : : "m"(*float_memory));
asm ("fstsw %ax"); /* test eax register */
asm ("fld1");
asm ("fldl2t");
asm ("fldl2e");
asm ("fldpi");
asm ("fldlg2");
asm ("fldln2");
asm ("fldz");
asm ("nop");
return 1; /* END I387-FLOAT-REVERSE */
}
|
GitWeb
