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17 lines
344 B
C
17 lines
344 B
C
// SPDX-License-Identifier: MIT
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// SPDX-FileCopyrightText: Copyright © 2005-2020 Rich Felker, et al.
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static unsigned long long __DOUBLE_BITS(double __f) {
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union {
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double __f;
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unsigned long long __i;
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} __u;
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__u.__f = __f;
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return __u.__i;
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}
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int __isnan(double x) {
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return (__DOUBLE_BITS(x) & -1ULL >> 1) > 0x7ffULL << 52;
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}
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