strict_ieee_fp

Controls generation of executable code that conforms to the IEEE floating point standard.

#pragma strict_ieee_fp on | off | reset
  

Disabling this option may improve performance but may change the results generated.

• Use Fused Mult-Add/Sub

  Uses a single instruction to do a multiply accumulate. This runs faster and generates slightly more accurate results than specified by IEEE, as it has an extra rounding bit between the multiply and the add/subtract).

• Generate fsel instruction

  The fsel instruction is not accurate for denormalized numbers, and may have issues related to unordered compares, but generally runs faster.

• Assume Ordered Compares

  Ignore the unordered issues when comparing floating point which allows converting:

   if (a <= b) 

  into

   if (!(a > b))