Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0-only
/* IEEE754 floating point arithmetic
 * single precision
 */
/*
 * MIPS floating point support
 * Copyright (C) 1994-2000 Algorithmics Ltd.
 */
 
#include "ieee754sp.h"
 
union ieee754sp ieee754sp_flong(s64 x)
{
<------>u64 xm;		/* <--- need 64-bit mantissa temp */
<------>int xe;
<------>int xs;
 
<------>ieee754_clearcx();
 
<------>if (x == 0)
<------><------>return ieee754sp_zero(0);
<------>if (x == 1 || x == -1)
<------><------>return ieee754sp_one(x < 0);
<------>if (x == 10 || x == -10)
<------><------>return ieee754sp_ten(x < 0);
 
<------>xs = (x < 0);
<------>if (xs) {
<------><------>if (x == (1ULL << 63))
<------><------><------>xm = (1ULL << 63);	/* max neg can't be safely negated */
<------><------>else
<------><------><------>xm = -x;
<------>} else {
<------><------>xm = x;
<------>}
<------>xe = SP_FBITS + 3;
 
<------>if (xm >> (SP_FBITS + 1 + 3)) {
<------><------>/* shunt out overflow bits
<------><------> */
<------><------>while (xm >> (SP_FBITS + 1 + 3)) {
<------><------><------>SPXSRSX1();
<------><------>}
<------>} else {
<------><------>/* normalize in grs extended single precision */
<------><------>while ((xm >> (SP_FBITS + 3)) == 0) {
<------><------><------>xm <<= 1;
<------><------><------>xe--;
<------><------>}
<------>}
<------>return ieee754sp_format(xs, xe, xm);
}