NAME
    IEEESPAdd -- add one single precision IEEE number to another
SYNOPSIS
      x   = IEEESPAdd(  y  ,  z  );
     d0                d0     d1
    float   x,y,z;
FUNCTION
    Compute x = y + z in IEEE single precision.
INPUTS
    y -- IEEE single precision floating point value
    z -- IEEE single precision floating point value
RESULT
    x -- IEEE single precision floating point value
BUGS
SEE ALSO
    ieeespsub