38 lines
1.7 KiB
C
38 lines
1.7 KiB
C
#include <stdio.h>
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#include <stdint.h>
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#include <inttypes.h>
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#include <assert.h>
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#define TEST(INSN, B_HI, B_LO, T_HI, T_LO) \
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do { \
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uint64_t th, tl, bh = B_HI, bl = B_LO; \
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asm("mtvsrd 0, %2\n\t" \
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"mtvsrd 1, %3\n\t" \
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"xxmrghd 0, 0, 1\n\t" \
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INSN " 0, 0\n\t" \
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"mfvsrd %0, 0\n\t" \
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"xxswapd 0, 0\n\t" \
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"mfvsrd %1, 0\n\t" \
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: "=r" (th), "=r" (tl) \
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: "r" (bh), "r" (bl) \
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: "vs0", "vs1"); \
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printf(INSN "(0x%016" PRIx64 "%016" PRIx64 ") = 0x%016" PRIx64 \
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"%016" PRIx64 "\n", bh, bl, th, tl); \
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assert(th == T_HI && tl == T_LO); \
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} while (0)
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int main(void)
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{
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/* SNaN shouldn't be silenced */
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TEST("xscvspdpn", 0x7fbfffff00000000ULL, 0x0, 0x7ff7ffffe0000000ULL, 0x0);
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TEST("xscvdpspn", 0x7ff7ffffffffffffULL, 0x0, 0x7fbfffff7fbfffffULL, 0x0);
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/*
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* SNaN inputs having no significant bits in the upper 23 bits of the
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* signifcand will return Infinity as the result.
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*/
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TEST("xscvdpspn", 0x7ff000001fffffffULL, 0x0, 0x7f8000007f800000ULL, 0x0);
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return 0;
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}
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