Converts a binary number to hexadecimal.
returns text representing a hexadecimal number, given binarynumber, which may be text, or a number containing only digits 1 and 0 (thus the number appears to be binary although it is not).
binarynumber may have up to ten bits in two's complement representation; positive numbers are 0 to 111111111 (nine bits representing 0 to 511 decimal) and negative numbers 1111111111 to 1000000000 (ten bits representing -1 to -512 decimal)
numdigits is an optional number specifying the number of digits to return.
If binarynumber is negative, BIN2HEX returns ten hexadecimal digits, representing the hexadecimal number in twos complement form.
returns 1D as text.
returns 1D as text. The number 11101 has only 1 and 0 digits, and may be read as binary.
returns 01A6 as text. BIN2HEX adds a leading zero to make 4 digits.
returns FFFFFFFFFE as text (twos complement representation of decimal -2).