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Diffstat (limited to 'arch/mips/math-emu/ieee754sp.c')
-rw-r--r--arch/mips/math-emu/ieee754sp.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/mips/math-emu/ieee754sp.c b/arch/mips/math-emu/ieee754sp.c
index ca8e35e33bf7..def00ffc50fc 100644
--- a/arch/mips/math-emu/ieee754sp.c
+++ b/arch/mips/math-emu/ieee754sp.c
@@ -37,8 +37,11 @@ static inline int ieee754sp_isnan(union ieee754sp x)
static inline int ieee754sp_issnan(union ieee754sp x)
{
+ int qbit;
+
assert(ieee754sp_isnan(x));
- return SPMANT(x) & SP_MBIT(SP_FBITS - 1);
+ qbit = (SPMANT(x) & SP_MBIT(SP_FBITS - 1)) == SP_MBIT(SP_FBITS - 1);
+ return ieee754_csr.nan2008 ^ qbit;
}
@@ -51,7 +54,12 @@ union ieee754sp __cold ieee754sp_nanxcpt(union ieee754sp r)
assert(ieee754sp_issnan(r));
ieee754_setcx(IEEE754_INVALID_OPERATION);
- return ieee754sp_indef();
+ if (ieee754_csr.nan2008)
+ SPMANT(r) |= SP_MBIT(SP_FBITS - 1);
+ else
+ r = ieee754sp_indef();
+
+ return r;
}
static unsigned ieee754sp_get_rounding(int sn, unsigned xm)