From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- arch/mips/math-emu/dp_fint.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 arch/mips/math-emu/dp_fint.c (limited to 'arch/mips/math-emu/dp_fint.c') diff --git a/arch/mips/math-emu/dp_fint.c b/arch/mips/math-emu/dp_fint.c new file mode 100644 index 000000000..996b15ba0 --- /dev/null +++ b/arch/mips/math-emu/dp_fint.c @@ -0,0 +1,44 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* IEEE754 floating point arithmetic + * double precision: common utilities + */ +/* + * MIPS floating point support + * Copyright (C) 1994-2000 Algorithmics Ltd. + */ + +#include "ieee754dp.h" + +union ieee754dp ieee754dp_fint(int x) +{ + u64 xm; + int xe; + int xs; + + ieee754_clearcx(); + + if (x == 0) + return ieee754dp_zero(0); + if (x == 1 || x == -1) + return ieee754dp_one(x < 0); + if (x == 10 || x == -10) + return ieee754dp_ten(x < 0); + + xs = (x < 0); + if (xs) { + if (x == (1 << 31)) + xm = ((unsigned) 1 << 31); /* max neg can't be safely negated */ + else + xm = -x; + } else { + xm = x; + } + + /* normalize - result can never be inexact or overflow */ + xe = DP_FBITS; + while ((xm >> DP_FBITS) == 0) { + xm <<= 1; + xe--; + } + return builddp(xs, xe + DP_EBIAS, xm & ~DP_HIDDEN_BIT); +} -- cgit v1.2.3