softfloat: Introduce float32_to_uint64_round_to_zero
This change adds the float32_to_uint64_round_to_zero function to the softfloat library. This function fills out the complement of float32 to INT round-to-zero conversion rountines, where INT is {int32_t, uint32_t, int64_t, uint64_t}. This contribution can be licensed under either the softfloat-2a or -2b license. Signed-off-by: Tom Musta <tommusta@gmail.com> Tested-by: Tom Musta <tommusta@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Alexander Graf <agraf@suse.de>
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@ -1626,6 +1626,26 @@ uint64 float32_to_uint64(float32 a STATUS_PARAM)
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return roundAndPackUint64(aSign, aSig64, aSigExtra STATUS_VAR);
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return roundAndPackUint64(aSign, aSig64, aSigExtra STATUS_VAR);
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}
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}
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/*----------------------------------------------------------------------------
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| Returns the result of converting the single-precision floating-point value
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| `a' to the 64-bit unsigned integer format. The conversion is
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| performed according to the IEC/IEEE Standard for Binary Floating-Point
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| Arithmetic, except that the conversion is always rounded toward zero. If
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| `a' is a NaN, the largest unsigned integer is returned. Otherwise, if the
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| conversion overflows, the largest unsigned integer is returned. If the
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| 'a' is negative, the result is rounded and zero is returned; values that do
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| not round to zero will raise the inexact flag.
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*----------------------------------------------------------------------------*/
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uint64 float32_to_uint64_round_to_zero(float32 a STATUS_PARAM)
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{
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signed char current_rounding_mode = STATUS(float_rounding_mode);
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set_float_rounding_mode(float_round_to_zero STATUS_VAR);
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int64_t v = float32_to_uint64(a STATUS_VAR);
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set_float_rounding_mode(current_rounding_mode STATUS_VAR);
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return v;
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}
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/*----------------------------------------------------------------------------
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/*----------------------------------------------------------------------------
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| Returns the result of converting the single-precision floating-point value
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| Returns the result of converting the single-precision floating-point value
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| `a' to the 64-bit two's complement integer format. The conversion is
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| `a' to the 64-bit two's complement integer format. The conversion is
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@ -342,6 +342,7 @@ uint32 float32_to_uint32( float32 STATUS_PARAM );
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uint32 float32_to_uint32_round_to_zero( float32 STATUS_PARAM );
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uint32 float32_to_uint32_round_to_zero( float32 STATUS_PARAM );
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int64 float32_to_int64( float32 STATUS_PARAM );
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int64 float32_to_int64( float32 STATUS_PARAM );
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uint64 float32_to_uint64(float32 STATUS_PARAM);
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uint64 float32_to_uint64(float32 STATUS_PARAM);
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uint64 float32_to_uint64_round_to_zero(float32 STATUS_PARAM);
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int64 float32_to_int64_round_to_zero( float32 STATUS_PARAM );
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int64 float32_to_int64_round_to_zero( float32 STATUS_PARAM );
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float64 float32_to_float64( float32 STATUS_PARAM );
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float64 float32_to_float64( float32 STATUS_PARAM );
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floatx80 float32_to_floatx80( float32 STATUS_PARAM );
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floatx80 float32_to_floatx80( float32 STATUS_PARAM );
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