strtox bug with negative exponent

[Alone-Coder]

;Power of 10 is stored in B, need to put in A first
xor a
sub b
ld de,pow10table+120
jp p,+_

doesn't work with numbers like 1e-2.
This works for me ("calc" in NedoOS):

;Power of 10 is stored in BC, need to put in A first
xor a
or b
ld de,pow10table+120
jp p,+_