diff options
Diffstat (limited to 'sim/common/sim-fpu.c')
| -rw-r--r-- | sim/common/sim-fpu.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/sim/common/sim-fpu.c b/sim/common/sim-fpu.c index 845248adb59..c9678bdc093 100644 --- a/sim/common/sim-fpu.c +++ b/sim/common/sim-fpu.c @@ -201,7 +201,11 @@ pack_fpu (const sim_fpu *src, /* force fraction to correct class */ fraction = src->fraction; fraction >>= NR_GUARDS; +#ifdef SIM_QUIET_NAN_NEGATED + fraction |= QUIET_NAN - 1; +#else fraction |= QUIET_NAN; +#endif break; case sim_fpu_class_snan: sign = src->sign; @@ -362,10 +366,17 @@ unpack_fpu (sim_fpu *dst, unsigned64 packed, int is_double) } else { + int qnan; + /* Non zero fraction, means NaN */ dst->sign = sign; dst->fraction = (fraction << NR_GUARDS); - if (fraction >= QUIET_NAN) +#ifdef SIM_QUIET_NAN_NEGATED + qnan = (fraction & QUIET_NAN) == 0; +#else + qnan = fraction >= QUIET_NAN; +#endif + if (qnan) dst->class = sim_fpu_class_qnan; else dst->class = sim_fpu_class_snan; |