Compute the magnitude of the fixed point value X.
Return prime factorization of Q.
Return the factorial of N where N is a positive integer.
Return true if CODE fails with an error message matching PATTERN, otherwise produce an error.
Return a matrix or N-dimensional array whose elements are all logical 0.
See "farg".
Compute the argument of X, defined as THETA = `atan2 (Y, X)' in radians.
Compute atan (Y / X) for corresponding fixed point elements of Y and X.
Return the datenum of the first business day of the YEAR and MONTH.
For each element of X, compute the CDF at X of the F distribution with M and N degrees of freedom, i.e., PROB (F (M, N) <= X).
Return the smallest integer not less than X.
Clear the stream state for the specified file.
Closes the specified file.
not implemented
Change the properties of the open file FID.
Returns the conjuate of the fixed point value X.
Compute the cosine of the fixed point value X.
Compute the hyperbolic cosine of the fixed point value X.
Cumulative product of elements along dimension DIM.
Cumulative sum of elements along dimension DIM.
Return a diagonal matrix with fixed point vector V on diagonal K.
Display the value of X on the stream FID.
feather does not work with the Grace graphic interface.
Filter the output of sys1 through sys2 and subtract it from the input.
@c file-io.cc
These routines compute the complete Fermi-Dirac integral F_{3/2}(x).
These routines compute the complete Fermi-Dirac integral F_{1/2}(x).
These routines compute the incomplete Fermi-Dirac integral with an index of zero, F_0(x,b) = \\ln(1 + e^{b-x}) - (b-x).
These routines compute the complete Fermi-Dirac integral with an integer index of j, F_j(x) = (1/\\Gamma(j+1)) \\int_0^\\infty dt (t^j /(\\exp(t-x)+1)).
These routines compute the complete Fermi-Dirac integral F_{-1/2}(x).
@c file-io.cc
Change the precision of the floating point arithmetics.
Change the rounding mode of the floating point arithmetics.
Download stock data from a connection.
Check some properties of floating point arithmetics: the rounding mode and the machine epsilon, as seen by Octave's interpreted code (ROUND and MACHEPS, respectively) and, if requested, as seen by BLAS (ROUNDB and MACHEPSB, respectively).
Evaluate the function named NAME.
Checks whether a file exists.
Compute the exponential of the fixed point value X.
usage
full-factor design with n binary terms.
Radix-4 fft in floating and fixed point for vectors of length 4^N, where N is an integer.
Return the largest integer not greater than X.
no description
Compute the FFT of A using subroutines from FFTW.
Compute the two-dimensional FFT of A using subroutines from FFTW.
Return the convolution of the vectors A and B, as a vector with length equal to the `length (a) + length (b) - 1'.
Convolve 2 dimensional signals using the FFT.
With two arguments, `fftfilt' filters X with the FIR filter B using the FFT.
Compute the N-dimensional FFT of A using subroutines from FFTW.
Perform a shift of the vector V, for use with the `fft' and `ifft' functions, in order the move the frequency 0 to the center of the vector or matrix.
Manage FFTW wisdom data.
Atomic form factor for Rayleigh scattering
Read characters from a file, stopping after a newline, or EOF, or LEN characters have been read.
Read characters from a file, stopping after a newline, or EOF, or LEN characters have been read.
The function fht calculates Fast Hartley Transform where D is the real input vector (matrix), and M is the real-transform vector.
Returns the decoded fibonacci value from the binary vectors CODE.
Returns the cell-array of encoded fibonacci value from the column vectors NUM.
Returns the split data stream at the word boundaries.
Return a cell array of strings naming the elements of the structure STRUCT.
Radix-4 ifft in fixed point for vectors of length 4^N, where.
Set the current plot window to plot window N.
Return information about FILE.
Return the directory, name, extension, and version components of FILENAME.
Return the system-dependent character used to separate directory names.
no description
no description
fill does not work with the Grace graphic interface.
not implemented
Return the solution to the following linear, time-invariant difference equation:
Apply the 2-D FIR filter B to X.
Forward and reverse filter the signal.
Set initial condition vector for filter function
Returns the imaginary part of the fixed point value X.
Return a vector of indices of nonzero elements of a matrix, as a row if X is a row or as a column otherwise.
Find object with specified property values including hidden handles.
Recursively search directory for files.
findobj does not work with the Grace graphic interface.
Find the span of a B-Spline knot vector at a parametric point
Return the vector of all positions in the longer of the two strings S and T where an occurrence of the shorter of the two starts.
Find symbols in expression F and return them comma-separated in string VARS.
Returns the symbols in symbolic expression F in a list.
Return 1 for elements of X that are finite values and zero otherwise.
For each component of X, compute the quantile (the inverse of the CDF) at X of the F distribution with parameters M and N.
Produce an order n FIR filter with the given frequency cutoff, returning the n+1 filter coefficients in b.
Produce an FIR filter of order n with arbitrary frequency response, returning the n+1 filter coefficients in b.
construct a system data structure from FIR description
not implemented
not implemented
filter design using least squares method.
not implemented
Luca Favatella <slackydeb@gmail.com>
Truncate fractional portion of X and return the integer portion.
Used the create a fixed point variable.
Manual and test code for the Octave Fixed Point toolbox.
Example code of the use of the fixed point types in an oct-file.
Query or set the internal variable `fixed_point_count_operations'.
Query or set the internal variable `fixed_point_debug'.
Query or set the internal variable that controls whether Octave will use a scaled format to print matrix values such that the largest element may be written with a single leading digit with the scaling factor is printed on the first line of output.
A function returning the version number of the fixed point library used.
A function returning the version number of the fixed point package used.
Query or set the internal variable `fixed_point_warn_overflow'.
Create color colormap.
The use of FLAG_IMPLICIT_SAMPLERATE is in experimental state.
The use of FLAG_IMPLICIT_SIGNIFICANCE is in experimental state.
Return the window f(w):
Return a copy of X flipped about the dimension DIM.
Return a copy of X with the order of the columns reversed.
Return a copy of X with the order of the rows reversed.
floating point index - interpolates data in case of non-integer indices
Loads a single variable of any type from a binary stream, where it was previously saved with fsave.
Converts a fixed point object to the equivalent floating point object.
Compute the natural logarithm of the fixed point value X.
Compute the base-10 logarithm of the fixed point value X.
Return the largest integer not greater than X.
This function is provided for MATLAB compatibility, but it doesn't actually do anything.
evaluates the right-hand sides of the spanwise flow equations given the spanwise distribution of flow control quantities (scaled circulations).
this function calculates the jacobian of floweq w.r.t.
Fluorescent Yield
Create the FM demodulation of the signal x with carrier frequency fs.
no description
Find the minimizer X of a scalar function and the corresponding value V with the Golden Search method.
Find the minimum of a funtion of several variables.
Find the minimum of a funtion of several variables.
M*tlab-like optimization
Create the FM modulation of the signal x with carrier frequency fs.
Compute the floating point remainder of dividing X by Y using the C library function `fmod'.
differentiate the spline in pp-form
Return 1 or zero for each element of STRING that matches any of the elements of the string array PATTERN, using the rules of filename pattern matching.
plots spline
or r = fnval(x,pp) Compute the value of the piece-wise polynomial pp at points x.
The first form of the `fopen' function opens the named file with the specified mode (read-write, read-only, etc.) and architecture interpretation (IEEE big endian, IEEE little endian, etc.), and returns an integer value that may be used to refer to the file later.
not implemented
Create a copy of the current process.
Control the format of the output produced by `disp' and Octave's normal echoing mechanism.
Return a character string representing the inline function FUN.
For each element of X, compute the probability density function (PDF) at X of the F distribution with M and N degrees of freedom.
P, T, U, ATTR_NAME, ATTR_RANK, ATTR_SHAPE, ENDFLIE )
Outputs data in DX form.
Outputs a time series in DX form.
Plots the 2D vector field VX, VY defined on the triangulation MESH using opendx.
Displays one 2-D triangulations using opendx
plots the scalar field U defined on the triangulation MESH using opendx.
VX1, VY1, [ MESH2, COLOR2, VX2, VY2 ...])
Displays two or more 2-D triangulations using opendx
Plots the scalar fields DATA over the triangulation MESH using opendx.
Plots the transient scalar field U defined on the triangulation MESH using opendx.
Plots the transient scalar fields DATA defined on the triangulation MESH using opendx.
Save data in VTK ASCII format.
Outputs data in DX form.
Outputs data in DX form.
fplot does not work with the Grace graphic interface.
This function is just like `printf', except that the output is written to the stream FID instead of `stdout'.
Product of elements along dimension DIM.
Write a string to a file with no formatting.
Shift the series X by a (possibly fractional) number of samples D.
Compute the fractional differences (1-L)^d x where L denotes the lag-operator and d is greater than -1.
Octave Control Toolbox demo: Frequency Response demo.
Read binary data of type PRECISION from the specified file ID FID.
Returns the real part of the fixed point value X.
freetb4matlab convert free toolboxes from Octave and Octave-forge for the use in Matlab(TM).
Print a list of which files have been opened, and whether they are open for reading, writing, or both.
Used by `__freqresp__' to check that input frequency vector W is valid.
Compute the s-plane frequency response of the IIR filter B(s)/A(s) as H = polyval(B,j*W)./polyval(A,j*W).
not implemented
Plot the amplitude and phase of the vector H.
Return the complex frequency response H of the rational IIR filter whose numerator and denominator coefficients are B and A, respectively.
Plot the pass band, stop band and phase response of H.
Return a fixed matrix with M rows and N columns whose elements are taken from the fixed matrix A.
Move the file pointer to the beginning of the file FID, returning 0 for success, and -1 if an error was encountered.
Return an R by C matrix of random samples from the F distribution with M and N degrees of freedom.
Return the rounded value to the nearest integer of X.
Save a single variable to a binary stream, to be subsequently loaded with fload.
In the first form, read from FID according to TEMPLATE, returning the result in the matrix VAL.
Set the file pointer to any location within the file FID.
Compute the sine of the fixed point value X.
Compute the hyperbolic sine of the fixed point value X.
Solve a system of nonlinear equations defined by the function FCN.
not implemented
Return a copy of the fixed point variable X with the elements arranged in increasing order.
Create spatial filters for image processing.
Compute the square-root of the fixed point value X.
Compute mean and variance of the F distribution.
Sum of elements along dimension DIM.
Sum of squares of elements along dimension DIM.
Compute the tan of the fixed point value X.
Compute the hyperbolic tan of the fixed point value X.
Return the position of the file pointer as the number of characters from the beginning of the file FID.
returns a full storage matrix from a sparse, diagonal, permutation matrix or a range.
Full factorial design.
Return a complete filename constructed from the given components.
convert a banded symmetric matrix to a sparse matrix
Return a string containing the name of the function referenced by the function handle FCN_HANDLE.
functionInt applies the given function f the required interval, it checks for monotonicitic.
Return a struct containing information about the function handle FCN_HANDLE.
Matrix equivalent of function 'name'
Return the future value at the end of period N of an investment which consists of N payments of P in each period, assuming an interest rate R.
Return the future value at the end of N periods of an initial lump sum investment L, given a per-period interest rate R.
Write data in binary form of type PRECISION to the specified file ID FID, returning the number of values successfully written to the file.
Given FCN, the name of a function of the form `F (X)', and an initial approximation APPROX, `fzero' solves the scalar nonlinear equation such that `F(X) == 0'.
For each element of X, compute the CDF at X of the F distribution with M and N degrees of freedom, i.e., PROB (F (M, N) <= X).
@c syscalls.cc
@c syscalls.cc
@c syscalls.cc
For each component of X, compute the quantile (the inverse of the CDF) at X of the F distribution with parameters M and N.
For each element of X, compute the probability density function (PDF) at X of the F distribution with M and N degrees of freedom.
Return an R by C matrix of random samples from the F distribution with M and N degrees of freedom.
@c syscalls.cc
@c syscalls.cc
Perform an F test for the null hypothesis rr * b = r in a classical normal regression model y = X * b + e.
