diff options
Diffstat (limited to 'sysdeps/ieee754/dbl-64/s_setpayload_main.c')
-rw-r--r-- | sysdeps/ieee754/dbl-64/s_setpayload_main.c | 42 |
1 files changed, 13 insertions, 29 deletions
diff --git a/sysdeps/ieee754/dbl-64/s_setpayload_main.c b/sysdeps/ieee754/dbl-64/s_setpayload_main.c index 0b0a295d6c..e0014a3b09 100644 --- a/sysdeps/ieee754/dbl-64/s_setpayload_main.c +++ b/sysdeps/ieee754/dbl-64/s_setpayload_main.c @@ -1,4 +1,4 @@ -/* Set NaN payload. dbl-64 version. +/* Set NaN payload. Copyright (C) 2016-2021 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -30,41 +30,25 @@ int FUNC (double *x, double payload) { - uint32_t hx, lx; - EXTRACT_WORDS (hx, lx, payload); - int exponent = hx >> (EXPLICIT_MANT_DIG - 32); + uint64_t ix; + EXTRACT_WORDS64 (ix, payload); + int exponent = ix >> EXPLICIT_MANT_DIG; /* Test if argument is (a) negative or too large; (b) too small, except for 0 when allowed; (c) not an integer. */ if (exponent >= BIAS + PAYLOAD_DIG - || (exponent < BIAS && !(SET_HIGH_BIT && hx == 0 && lx == 0))) + || (exponent < BIAS && !(SET_HIGH_BIT && ix == 0)) + || (ix & ((1ULL << (BIAS + EXPLICIT_MANT_DIG - exponent)) - 1)) != 0) { - INSERT_WORDS (*x, 0, 0); + INSERT_WORDS64 (*x, 0); return 1; } - int shift = BIAS + EXPLICIT_MANT_DIG - exponent; - if (shift < 32 - ? (lx & ((1U << shift) - 1)) != 0 - : (lx != 0 || (hx & ((1U << (shift - 32)) - 1)) != 0)) + if (ix != 0) { - INSERT_WORDS (*x, 0, 0); - return 1; - } - if (exponent != 0) - { - hx &= (1U << (EXPLICIT_MANT_DIG - 32)) - 1; - hx |= 1U << (EXPLICIT_MANT_DIG - 32); - if (shift >= 32) - { - lx = hx >> (shift - 32); - hx = 0; - } - else if (shift != 0) - { - lx = (lx >> shift) | (hx << (32 - shift)); - hx >>= shift; - } + ix &= (1ULL << EXPLICIT_MANT_DIG) - 1; + ix |= 1ULL << EXPLICIT_MANT_DIG; + ix >>= BIAS + EXPLICIT_MANT_DIG - exponent; } - hx |= 0x7ff00000 | (SET_HIGH_BIT ? 0x80000 : 0); - INSERT_WORDS (*x, hx, lx); + ix |= 0x7ff0000000000000ULL | (SET_HIGH_BIT ? 0x8000000000000ULL : 0); + INSERT_WORDS64 (*x, ix); return 0; } |