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Function Reference
Fully tested functions
This section lists all the functions that have been tested against MATLAB(R) functions and verified to produce the same output:Untested functions
This section lists the functions that have been implemented and tested informally. Functions listed here may not produce the same results as the same functions in MATLAB(R):Fourier transforms
Trigonometric
- acos - Inverse Cosine
- acosd - Inverse Cosine (result in degrees)
- acosh - Inverse Hyperbolic Cosine
- acot - Inverse Cotangent
- acotd - Inverse Cotangent (result in degrees)
- acoth - Inverse Hyperbolic Cotangent
- acsc - Inverse Cosecant
- acscd - Inverse Cosecant (result in degrees)
- acsch - Inverse Hyperbolic Cosecant
- asec - Inverse Secant
- asecd - Inverse Secant (result in degrees)
- asech - Inverse Hyperbolic Secant
- asin - Inverse Sine
- asind - Inverse Sine (result in degrees)
- asinh - Inverse Hyperbolic Sine
- atan - Inverse Tangent
- atan2 - Four Quadrant Inverse Tangent
- atand - Inverse Tangent (result in degrees)
- atanh - Inverse Hyperbolic Tangent
- cos - Cosine
- cosd - Cosine (argument in degrees)
- cosh - Hyperbolic Cosine
- cot - Cotangent
- cotd - Cotangent (argument in degrees)
- coth - Hyperbolic Cotangent
- csc - Cosecant
- cscd - Cosecant (argument in degrees)
- csch - Hyperbolic Cosecant
- hypot - Length of hypotenuse given perpendicular sides
- sec - Secant
- secd - Secant (argument in degrees)
- sech - Hyperbolic Secant
- sin - Sine
- sind - Sine (argument in degrees)
- sinh - Hyperbolic Sine
- tan - Tangent
- tand - Tangent (argument in degrees)
- tanh - Hyperbolic Tangent
Exponential
- exp - Exponent
- expm1 - Calculate exp(x) - 1 for small values of x
- log - Natural Logarithm
- log10 - Logarithm Base-10
- log1p - Calculate log(x + 1) for small values of x
- log2 - Logarithm Base-2
- nextpow2 - Next Power of 2
- nthroot - Nth Root
- pow2 - Power of 2
- power - Power
- reallog - Real Logarithm
- realpow - Real Power
- realsqrt - Real Square Root
- sqrt - Square Root
Complex
- abs - Absolute Value or Complex Magnitude
- angle - Phase Angle
- complex - Construct Complex Number
- conj - Complex Conjugate
- i - Imaginary Unit
- imag - Imaginary Part
- isreal - Test for Real Number
- j - Imaginary Unit
- real - Real Part
- sign - Sign of Argument
- unwrap Unwrap Phase Angles
Rounding and Remainder
- ceil - Ceiling
- fix - Fix
- floor - Floor
- idivide - Integer Division
- mod - Modulus
- rem - Remainder
- round - Round
Discrete Math
- factor - Calculate Prime Factors of Integer
- factorial - Factorial
- gcd - Greatest Common Divisor
- isprime - Test for Prime Numbers
- lcm - Lowest Common Multiple
- nchoosek - Binomial Coefficient or All Combinations
- perms - Permutations
- primes - Generate Prime Numbers
- rat - Fractional Approximation to Real Number
- rats - Display Continued Fraction Approximating Real Number
Basic Information
- disp - Display Text or Array
- display - Display Text or Array
- iscolumn - Test for Column Vector
- isempty - Test for Empty Array
- isequal - Test for Equality
- isequalwithequalnans - Test for Equality (treat NaNs as equal)
- isfinite - Test for Finite Values
- isfloat - Test for Floating Point Values
- isinf - Test for Infinity
- isinteger - Test for Integer Values
- islogical - Test for Logical Values
- ismatrix - Test for Matrix
- isnan - Test for NaNs
- isrow - Test for Row Vector
- isscalar - Test for Scalar
- length - Vector Length
- max - Maximum Value
- min - Minimum Value
- ndims - Number of Dimensions
- numel - Number of Elements
- size - Array Size
Math Constants
- eps - Floating Point Relative Precision (Epsilon)
- intmax - Maximum Integer Value
- intmin - Minimum Integer Value
- NaN - Not-a-Number Value
- pi - Value of PI
- realmax - Maximum Real Value
- realmin - Minimum Real Value
Elementary Matrices and Arrays
- blkdiag - Construct Diagonal Matrix
- diag - Diagonal Matrix and Diagonal of Matrix
- eye - Identity Matrix
- ind2sub - Convert Index to Subscript (unit tested)
- linspace - Linearly Spaced Vectors
- logspace - Logarithmically Spaced Vectors
- meshgrid - Generate mesh grid
- ones - Generate Matrix Containing All 1s
- rand - Generate Pseudo-Random Numbers
- sub2ind - Convert Subscript to Index (unit tested)
- zeros - Generate Matrix Containing All 0s
Array Operations
Array Manipulation
- cat - Concatenate Matrices Along Dimension
- horzcat - Concatenate Matrices Horizontally
- repmat - Replicate and Tile Matrices
- reshape - Reshape Array
- shiftdim - Shift Dimension
- sort - Sort Elements
- vertcat - Concatenate Matrices Vertically
Matrix Operations
- multiply - Matrix Multiply
Matrix Analysis
- trace - Extract Matrix Diagonal
Linear Equations
- inv - Inverse of Square Matrix
Specialized matrices
- magic - Generate Magic Square