__signbit.c « libm_dbl « lib - micropython - MicroPython - a lean and efficient Python implementation for microcontrollers and constrained systems

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path: root/lib/libm_dbl/__signbit.c

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#include "libm.h"

int __signbitd(double x)
{
	union {
		double d;
		uint64_t i;
	} y = { x };
	return y.i>>63;
}