1 #include <stdio.h>
2 #include <stdint.h>
3 #include <inttypes.h>
4 #include <assert.h>
5
6 #define TEST(INSN, B_HI, B_LO, T_HI, T_LO) \
7 do { \
8 uint64_t th, tl, bh = B_HI, bl = B_LO; \
9 asm("mtvsrd 32, %2\n\t" \
10 "mtvsrd 33, %3\n\t" \
11 "xxmrghd 32, 32, 33\n\t" \
12 INSN " 32, 32\n\t" \
13 "mfvsrd %0, 32\n\t" \
14 "xxswapd 32, 32\n\t" \
15 "mfvsrd %1, 32\n\t" \
16 : "=r" (th), "=r" (tl) \
17 : "r" (bh), "r" (bl) \
18 : "v0", "v1"); \
19 printf(INSN "(0x%016" PRIx64 "%016" PRIx64 ") = 0x%016" PRIx64 \
20 "%016" PRIx64 "\n", bh, bl, th, tl); \
21 assert(th == T_HI && tl == T_LO); \
22 } while (0)
23
main(void)24 int main(void)
25 {
26 /* SNaN shouldn't be silenced */
27 TEST("xscvspdpn", 0x7fbfffff00000000ULL, 0x0, 0x7ff7ffffe0000000ULL, 0x0);
28 TEST("xscvdpspn", 0x7ff7ffffffffffffULL, 0x0, 0x7fbfffff7fbfffffULL, 0x0);
29
30 /*
31 * SNaN inputs having no significant bits in the upper 23 bits of the
32 * signifcand will return Infinity as the result.
33 */
34 TEST("xscvdpspn", 0x7ff000001fffffffULL, 0x0, 0x7f8000007f800000ULL, 0x0);
35
36 return 0;
37 }
38