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15 lines
602 B
C
15 lines
602 B
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include <math.h> /* IWYU pragma: export */
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#include "forward.h"
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/* On some optimization level, iszero(x) is converted to (x == 0.0), and emits warning -Wfloat-equal.
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* The argument must be a floating point, i.e. one of float, double, or long double. */
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#define iszero_safe(x) (fpclassify(x) == FP_ZERO)
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/* To avoid x == y and triggering compile warning -Wfloat-equal. This returns false if one of the argument is
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* NaN or infinity. One of the argument must be a floating point. */
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#define fp_equal(x, y) iszero_safe((x) - (y))
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