# Engineering functions

 BESSELI Calculates the modified Bessel function of the first kind. BESSELJ Calculates the Bessel function of the first kind. BESSELK Calculates the modified Bessel function of the second kind. BESSELY Calculates the Bessel function of the second kind (the Neumann or Weber function). BIN2DEC Converts a binary number to a decimal number. BIN2HEX Converts a binary number to a hexadecimal number. BIN2OCT Converts a binary number to an octal number. BITAND Performs a bitwise AND operation. BITLSHIFT Shifts a number left by the specified number of bits. BITOR Performs a bitwise OR operation. BITRSHIFT Shifts a number right by the specified number of bits. BITXOR Performs a bitwise XOR operation. COMPLEX Returns a complex number as text. CONVERT Converts the given number from one unit to another. DEC2BIN Converts a decimal number to a binary number. DEC2HEX Converts a decimal number to a hexadecimal number. DEC2OCT Converts a decimal number to an octal number. DELTA Returns 1 if both parameters are equal and 0 otherwise. ERF Returns the Gauss error function calculated between 0 and an upper bound. ERFC Returns the complementary Gauss error function calculated between a lower bound and infinity. GESTEP Returns 1 if a number is greater than or equal to a step number, or 0 otherwise. HEX2BIN Converts a hexadecimal number to a binary number. HEX2DEC Converts a hexadecimal number to a decimal number. HEX2OCT Converts a hexadecimal number to an octal number. IMABS Returns the absolute value of a complex number. IMAGINARY Returns the imaginary part of a complex number. IMARGUMENT Returns the argument of a complex number. IMCONJUGATE Returns the complex conjugate of a complex number. IMCOS Returns the cosine of a complex number. IMCOSH Returns the hyperbolic cosine of a complex number. IMCOT Returns the cotangent of a complex number. IMDIV Returns the result of dividing one complex number by another. IMEXP Returns Euler's constant e raised to a complex number. IMLN Returns the natural logarithm of a complex number (using Euler's constant e as its base). IMLOG10 Returns the base ten logarithm of a complex number. IMLOG2 Returns the base two logarithm of a complex number. IMPOWER Raises a complex number to an exponent and returns the result. IMPRODUCT Returns the product of the given complex numbers. IMREAL Returns the real part of a complex number. IMSEC Returns the secant of a complex number. IMSECH Returns the hyperbolic secant of a complex number. IMSIN Returns the sine of a complex number. IMSINH Returns the hyperbolic sine of a complex number. IMSQRT Returns the square root of a complex number. IMSUB Returns the difference between two complex numbers. IMSUM Returns the sum of the given complex numbers. IMTAN Returns the tangent of a complex number. OCT2BIN Converts an octal number to a binary number. OCT2DEC Converts an octal number to a decimal number. OCT2HEX Converts an octal number to a hexadecimal number.