Math and Computation

Base Conversion

base_convert(number,oldbase,newbase)   Returns a string of digits representing the given number converted from one base to another. bin_to_dec(bin)   Returns a non-negative integer converted from the given string of binary digits. bin_to_fraction(str)   Returns the decimal fraction that represents the given binary string. bin_to_hex(bin)   Returns a string of hexadecimal digits converted from the given string of binary digits. dec_to_bin(dec)   Returns a string of binary digits converted from the given non-negative integer. dec_to_hex(dec)   Returns a string of hexadecimal digits converted from the given non-negative integer. dec_to_oct(dec)   Returns a string of octal digits converted from the given non-negative integer. dec_to_roman(dec)   Returns the given integer expressed as a roman numeral string. fraction_to_bin(value,size)   Returns a string of binary digits representing the given decimal fraction. hex_to_bin(hex)   Returns a string of binary digits converted from the given string of hexadecimal digits. hex_to_dec(hex)   Returns a non-negative integer coverted from a string of hexadecimal digits. oct_to_dec(oct)   Returns a non-negative integer coverted from a string of octal digits. roman_to_dec(dec)   Returns the given number converted from a roman numeral string.

Binary Data Encoding and Decoding

bytes_to_b64(str)   Returns a string of base64 digits (RFC 3548) converted from the given string of bytes. bytes_to_bin(str)   Returns a string of binary digits converted from the given string of bytes. bytes_to_hex(str)   Returns a string of hexadecimal digits converted from the given string of bytes. b64_to_bytes(b64)   Returns a string of bytes converted from the given string of base64 digits (RFC 3548). bin_to_bytes(bin)   Returns a string of bytes converted from the given string of binary digits. hex_to_bytes(hex)   Returns a string of bytes converted from the given string of hexadecimal digits. decode_real_double(str)   Returns a real value decoded from an 8-byte string in IEEE 754 double precision format. encode_real_double(n)   Returns the given value as an 8-byte string in IEEE 754 double precision format. value_min_bits(n,size)   Returns the smallest number of bits that can be used to store the given value. word_max_value(length,size)   Returns the largest integer that can be stored in the given number of words.

Message Digest

crc16(str,mode)   Returns a CRC16-CCITT hash value for the given string. md2(str)   Returns an MD2 hash (RFC 1319) for the given string. md5(str)   Returns an MD5 hash (RFC 1321) for the given string. string_soundex(str)   Returns the Soundex value of the given string.