1 #include <stdio.h>
2
3 /* Test BFP multiply and add/sub 32/64-bit. There are no such insns
4 working with 128-bit data */
5
maebr(float v1,float v2,float v3)6 void maebr(float v1, float v2, float v3)
7 {
8 float r1 = v1;
9
10 __asm__ volatile("maebr %[r1],%[r3],%[r2]"
11 : [r1]"+f"(r1) : [r2]"f"(v2), [r3]"f"(v3));
12 printf("maebr %f * %f + %f -> %f\n", v2, v3, v1, r1);
13 }
14
madbr(double v1,double v2,double v3)15 void madbr(double v1, double v2, double v3)
16 {
17 double r1 = v1;
18
19 __asm__ volatile("madbr %[r1],%[r3],%[r2]"
20 : [r1]"+f"(r1) : [r2]"f"(v2), [r3]"f"(v3));
21 printf("madbr %f * %f + %f -> %f\n", v2, v3, v1, r1);
22 }
23
msebr(float v1,float v2,float v3)24 void msebr(float v1, float v2, float v3)
25 {
26 float r1 = v1;
27
28 __asm__ volatile("msebr %[r1],%[r3],%[r2]"
29 : [r1]"+f"(r1) : [r2]"f"(v2), [r3]"f"(v3));
30 printf("msebr %f * %f - %f -> %f\n", v2, v3, v1, r1);
31 }
32
msdbr(double v1,double v2,double v3)33 void msdbr(double v1, double v2, double v3)
34 {
35 double r1 = v1;
36
37 __asm__ volatile("msdbr %[r1],%[r3],%[r2]"
38 : [r1]"+f"(r1) : [r2]"f"(v2), [r3]"f"(v3));
39 printf("msdbr %f * %f - %f -> %f\n", v2, v3, v1, r1);
40 }
41
main(void)42 int main(void)
43 {
44 // multiply and add
45 maebr(10.5f, 20.25, 3.0); // 4 byte values
46 madbr(-10.5, 42.75, -2.0); // 8 byte values
47
48 // multiply and sub
49 msebr(10.5f, 20.25, 3.0); // 4 byte values
50 msdbr(-10.5, 42.75, -2.0); // 8 byte values
51
52 return 0;
53 }
54