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| author | Stefan Hajnoczi <stefanha@redhat.com> | 2025-07-13 01:46:04 -0400 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2025-07-13 01:46:04 -0400 |
| commit | 9a4e273ddec3927920c5958d2226c6b38b543336 (patch) | |
| tree | e8c0d8d2dc38db30f39a722611c7b899e15e2b04 /tests/tcg/multiarch/fnmsub.c | |
| parent | 52af79811f0f0d38b8e99d2df68a3a14d79353ca (diff) | |
| parent | d6390204c61e148488f034d1f79be35cd3318d93 (diff) | |
| download | qemu-master.zip qemu-master.tar.gz qemu-master.tar.bz2 | |
fpu: Process float_muladd_negate_result after rounding
tcg: Use uintptr_t in tcg_malloc implementation
linux-user: Hold the fd-trans lock across fork
linux-user: Implement fchmodat2 syscall
linux-user: Check for EFAULT failure in nanosleep
linux-user: Use qemu_set_cloexec() to mark pidfd as FD_CLOEXEC
linux-user/gen-vdso: Handle fseek() failure
linux-user/gen-vdso: Don't read off the end of buf[]
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* tag 'pull-tcg-20250711' of https://gitlab.com/rth7680/qemu:
linux-user: Use qemu_set_cloexec() to mark pidfd as FD_CLOEXEC
tcg: Use uintptr_t in tcg_malloc implementation
linux-user: Hold the fd-trans lock across fork
linux-user/mips/o32: Drop sa_restorer functionality
linux-user/gen-vdso: Don't read off the end of buf[]
linux-user/gen-vdso: Handle fseek() failure
linux-user: Check for EFAULT failure in nanosleep
linux-user: Implement fchmodat2 syscall
fpu: Process float_muladd_negate_result after rounding
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'tests/tcg/multiarch/fnmsub.c')
| -rw-r--r-- | tests/tcg/multiarch/fnmsub.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/tests/tcg/multiarch/fnmsub.c b/tests/tcg/multiarch/fnmsub.c new file mode 100644 index 0000000..15dd41d --- /dev/null +++ b/tests/tcg/multiarch/fnmsub.c @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#include <stdio.h> +#include <math.h> +#include <fenv.h> + +union U { + double d; + unsigned long long l; +}; + +union U x = { .l = 0x4ff0000000000000ULL }; +union U y = { .l = 0x2ff0000000000000ULL }; +union U r; + +int main() +{ +#ifdef FE_DOWNWARD + fesetround(FE_DOWNWARD); + +#if defined(__loongarch__) + asm("fnmsub.d %0, %1, %1, %2" : "=f"(r.d) : "f"(x.d), "f"(y.d)); +#elif defined(__powerpc64__) + asm("fnmsub %0,%1,%1,%2" : "=f"(r.d) : "f"(x.d), "f"(y.d)); +#elif defined(__s390x__) && 0 /* need -march=z14 */ + asm("vfnms %0,%1,%1,%2,0,3" : "=f"(r.d) : "f"(x.d), "f"(y.d)); +#else + r.d = -fma(x.d, x.d, -y.d); +#endif + + if (r.l != 0xdfefffffffffffffULL) { + printf("r = %.18a (%016llx)\n", r.d, r.l); + return 1; + } +#endif + return 0; +} |