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softfloat: Add float16 <=> float64 conversion functions

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Add the conversion functions float16_to_float64() and
float64_to_float16(), which will be needed for the ARM
A64 instruction set.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Peter Maydell 2014-01-07 17:19:12 +00:00
parent c4a1c5e7e2
commit 14c9a07eb9
2 changed files with 77 additions and 0 deletions
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2
include/fpu/softfloat.h
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@ -298,6 +298,8 @@ INLINE float64 uint16_to_float64(uint16_t v STATUS_PARAM)
*----------------------------------------------------------------------------*/
float16 float32_to_float16( float32, flag STATUS_PARAM );
float32 float16_to_float32( float16, flag STATUS_PARAM );
float16 float64_to_float16(float64 a, flag ieee STATUS_PARAM);
float64 float16_to_float64(float16 a, flag ieee STATUS_PARAM);
/*----------------------------------------------------------------------------
| Software half-precision operations.