HP MLIB User's Guide Vol. 2 7th Ed.

Chapter 5 Fast Fourier Transforms 539
Overview
5 Fast Fourier Transforms
Overview
This chapter explains how to use the VECLIB fast Fourier transform (FFT)
subprograms. The operations covered are:
• One-, two-, and three-dimensional complex-to-complex FFT subprograms
• One-, two-, and three-dimensional real-to-complex FFT subprograms
• One-dimensional simultaneous complex-to-complex FFT subprograms
• One-dimensional simultaneous real-to-complex FFT subprograms
Chapter objectives
After reading this chapter you will:
• Understand VECLIB FFT subprogram restrictions
• Know how to augment subprograms with zero-value data points
• Know how to use the subprograms described in “Subprograms for Fast
Fourier Transforms” on page 541