T=d f ld
V=x
R=0.5,3,0.5
F=1*(log10(x)=log10(2)) + \
  2*(log10(x)<log10(2)) + \
  4*(log10(x)<=log10(2)) + \
  8*(log10(x)>log10(2)) + \
  16*(log10(x)>=log10(2)) + \
  32*(log10(x)!=log10(2))
C=1*fp_equal(fp_log10(x),fp_log10(2)) + \
  2*fp_less(fp_log10(x),fp_log10(2)) + \
  4*fp_lessOrEq(fp_log10(x),fp_log10(2)) + \
  8*fp_greater(fp_log10(x),fp_log10(2)) + \
  16*fp_greaterOrEq(fp_log10(x),fp_log10(2)) + \
  32*fp_nequal(fp_log10(x),fp_log10(2))
