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path: root/src/math/scalbnf.c
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#include "libm.h"

float scalbnf(float x, int n)
{
	float scale;

	if (n > 127) {
		x *= 0x1p127f;
		n -= 127;
		if (n > 127) {
			x *= 0x1p127f;
			n -= 127;
			if (n > 127)
				return x * 0x1p127f;
		}
	} else if (n < -126) {
		x *= 0x1p-126f;
		n += 126;
		if (n < -126) {
			x *= 0x1p-126f;
			n += 126;
			if (n < -126)
				return x * 0x1p-126f;
		}
	}
	SET_FLOAT_WORD(scale, (uint32_t)(0x7f+n)<<23);
	return x * scale;
}