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fpu/softfloat: fix up float16 nan recognition

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Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200712234521.3972-2-zhiwei_liu@c-sky.com>
Message-Id: <20200713200415.26214-5-alex.bennee@linaro.org>
This commit is contained in:
LIU Zhiwei 2020-07-13 21:04:08 +01:00 committed by Alex Bennée
parent 6f60a240f6
commit 8cdf91243f
1 changed files with 2 additions and 2 deletions
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4
fpu/softfloat-specialize.inc.c
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@ -254,7 +254,7 @@ bool float16_is_quiet_nan(float16 a_, float_status *status)
if (snan_bit_is_one(status)) {
return (((a >> 9) & 0x3F) == 0x3E) && (a & 0x1FF);
} else {
return ((a & ~0x8000) >= 0x7C80);
return ((a >> 9) & 0x3F) == 0x3F;
}
#endif
}
@ -271,7 +271,7 @@ bool float16_is_signaling_nan(float16 a_, float_status *status)
#else
uint16_t a = float16_val(a_);
if (snan_bit_is_one(status)) {
return ((a & ~0x8000) >= 0x7C80);
return ((a >> 9) & 0x3F) == 0x3F;
} else {
return (((a >> 9) & 0x3F) == 0x3E) && (a & 0x1FF);
}