diff options
Diffstat (limited to 'sysdeps/ieee754/dbl-64/s_issignaling.c')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/s_issignaling.c | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/sysdeps/ieee754/dbl-64/s_issignaling.c b/sysdeps/ieee754/dbl-64/s_issignaling.c index d3344e5116..5fb6fbc7d4 100644 --- a/sysdeps/ieee754/dbl-64/s_issignaling.c +++ b/sysdeps/ieee754/dbl-64/s_issignaling.c @@ -23,25 +23,21 @@ int __issignaling (double x) { + uint64_t xi; + EXTRACT_WORDS64 (xi, x); #if HIGH_ORDER_BIT_IS_SET_FOR_SNAN - uint32_t hxi; - GET_HIGH_WORD (hxi, x); /* We only have to care about the high-order bit of x's significand, because having it set (sNaN) already makes the significand different from that used to designate infinity. */ - return (hxi & 0x7ff80000) == 0x7ff80000; + return (xi & UINT64_C (0x7ff8000000000000)) == UINT64_C (0x7ff8000000000000); #else - uint32_t hxi, lxi; - EXTRACT_WORDS (hxi, lxi, x); /* To keep the following comparison simple, toggle the quiet/signaling bit, so that it is set for sNaNs. This is inverse to IEEE 754-2008 (as well as common practice for IEEE 754-1985). */ - hxi ^= 0x00080000; - /* If lxi != 0, then set any suitable bit of the significand in hxi. */ - hxi |= (lxi | -lxi) >> 31; + xi ^= UINT64_C (0x0008000000000000); /* We have to compare for greater (instead of greater or equal), because x's significand being all-zero designates infinity not NaN. */ - return (hxi & 0x7fffffff) > 0x7ff80000; + return (xi & UINT64_C (0x7fffffffffffffff)) > UINT64_C (0x7ff8000000000000); #endif } libm_hidden_def (__issignaling) |