diff options
Diffstat (limited to 'include/fpu')
| -rw-r--r-- | include/fpu/softfloat.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h index 806ae13780..4b4df88527 100644 --- a/include/fpu/softfloat.h +++ b/include/fpu/softfloat.h @@ -249,11 +249,14 @@ void float_raise( int8 flags STATUS_PARAM); | Using these differs from negating an input or output before calling | the muladd function in that this means that a NaN doesn't have its | sign bit inverted before it is propagated. +| We also support halving the result before rounding, as a special +| case to support the ARM fused-sqrt-step instruction FRSQRTS. *----------------------------------------------------------------------------*/ enum { float_muladd_negate_c = 1, float_muladd_negate_product = 2, float_muladd_negate_result = 4, + float_muladd_halve_result = 8, }; /*---------------------------------------------------------------------------- |