Chapter 6: Transforms

IMSL C Math Library

Functions

Real Trigonometric FFTs

Real FFT, fft_real

Real FFT initialization, fft_real_init

Complex Exponential FFTs

Complex FFT, fft_complex

Complex FFT initialization, fft_complex_init

Real Sine and Cosine FFTs

Fourier cosine transform, fft_cosine

Fourier cosine transform initialization, fft_cosine_init

Fourier sine transform, fft_sine

Fourier sine transform initialization, fft_sine_init

Two-Dimensional FFTs

Complex two-dimensional FFT, fft_2d_complex

Convolution and Correlation

Real convolution/correlation, convolution

Complex convolution/correlation, convolution (complex)

Laplace Transform

Approximate inverse Laplace transform of a complex function, inverse_laplace