diff options
Diffstat (limited to 'lib/isnan.c')
| -rw-r--r-- | lib/isnan.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/lib/isnan.c b/lib/isnan.c index c7d84e8d..915187ba 100644 --- a/lib/isnan.c +++ b/lib/isnan.c @@ -1,5 +1,5 @@ /* Test for NaN that does not need libm. - Copyright (C) 2007-2024 Free Software Foundation, Inc. + Copyright (C) 2007-2025 Free Software Foundation, Inc. This file is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as @@ -130,15 +130,13 @@ FUNC (DOUBLE x) /* Be careful to not do any floating-point operation on x, such as x == x, because x may be a signaling NaN. */ # if defined __SUNPRO_C || defined __ICC || defined _MSC_VER \ - || defined __DECC || defined __TINYC__ \ - || (defined __sgi && !defined __GNUC__) + || defined __DECC || defined __TINYC__ /* The Sun C 5.0, Intel ICC 10.0, Microsoft Visual C/C++ 9.0, Compaq (ex-DEC) 6.4, and TinyCC compilers don't recognize the initializers as constant expressions. The Compaq compiler also fails when constant-folding 0.0 / 0.0 even when constant-folding is not required. The Microsoft Visual C/C++ compiler also fails when constant-folding 1.0 / 0.0 even - when constant-folding is not required. The SGI MIPSpro C compiler - complains about "floating-point operation result is out of range". */ + when constant-folding is not required. */ static DOUBLE zero = L_(0.0); memory_double nan; DOUBLE plus_inf = L_(1.0) / zero; @@ -158,8 +156,8 @@ FUNC (DOUBLE x) if (((m.word[EXPBIT0_WORD] ^ nan.word[EXPBIT0_WORD]) & (EXP_MASK << EXPBIT0_BIT)) == 0) - return (memcmp (&m.value, &plus_inf, SIZE) != 0 - && memcmp (&m.value, &minus_inf, SIZE) != 0); + return (!memeq (&m.value, &plus_inf, SIZE) + && !memeq (&m.value, &minus_inf, SIZE)); else return 0; } @@ -179,7 +177,7 @@ FUNC (DOUBLE x) memset (&m2.value, 0, SIZE); m1.value = x; m2.value = x + (x ? 0.0L : -0.0L); - if (memcmp (&m1.value, &m2.value, SIZE) != 0) + if (!memeq (&m1.value, &m2.value, SIZE)) return 1; # endif return 0; |