From b750101eb236130cf056c675997decbac904cc49 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 17:35:18 +0200 Subject: Adding upstream version 252.22. Signed-off-by: Daniel Baumann --- src/basic/math-util.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 src/basic/math-util.h (limited to 'src/basic/math-util.h') diff --git a/src/basic/math-util.h b/src/basic/math-util.h new file mode 100644 index 0000000..24023cd --- /dev/null +++ b/src/basic/math-util.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +#include + +#include "macro.h" + +/* On some optimization level, iszero(x) is converted to (x == 0.0), and emits warning -Wfloat-equal. + * The argument must be a floating point, i.e. one of float, double, or long double. */ +#define iszero_safe(x) (fpclassify(x) == FP_ZERO) + +/* To avoid x == y and triggering compile warning -Wfloat-equal. This returns false if one of the argument is + * NaN or infinity. One of the argument must be a floating point. */ +#define fp_equal(x, y) iszero_safe((x) - (y)) -- cgit v1.2.3