From f591e1bedf01a4b1de0891a66320a0724412d009 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Thu, 10 Feb 2011 11:28:59 +0000 Subject: softfloat: Correctly handle NaNs in float16_to_float32() Correctly handle NaNs in float16_to_float32(), by defining and using a float16ToCommonNaN() function, as we do with the other formats. Signed-off-by: Peter Maydell Signed-off-by: Aurelien Jarno --- fpu/softfloat-specialize.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'fpu/softfloat-specialize.h') diff --git a/fpu/softfloat-specialize.h b/fpu/softfloat-specialize.h index 1c0b12b573..2d025bfa36 100644 --- a/fpu/softfloat-specialize.h +++ b/fpu/softfloat-specialize.h @@ -119,6 +119,23 @@ float16 float16_maybe_silence_nan(float16 a_) return a_; } +/*---------------------------------------------------------------------------- +| Returns the result of converting the half-precision floating-point NaN +| `a' to the canonical NaN format. If `a' is a signaling NaN, the invalid +| exception is raised. +*----------------------------------------------------------------------------*/ + +static commonNaNT float16ToCommonNaN( float16 a STATUS_PARAM ) +{ + commonNaNT z; + + if ( float16_is_signaling_nan( a ) ) float_raise( float_flag_invalid STATUS_VAR ); + z.sign = float16_val(a) >> 15; + z.low = 0; + z.high = ((bits64) float16_val(a))<<54; + return z; +} + /*---------------------------------------------------------------------------- | Returns the result of converting the canonical NaN `a' to the half- | precision floating-point format. -- cgit v1.2.1