Functions (The GNU Awk User’s Guide)
This chapter describes
awk’s built-in functions, which fall into three categories: numeric, string, and I/O.
gawk provides additional groups of functions to work with values that represent time, do bit manipulation, sort arrays, provide type information, and internationalize and localize programs.
Besides the built-in functions,
awk has provisions for writing new functions that the rest of a program can use. The second half of this chapter describes these user-defined functions. Finally, we explore indirect function calls, a
gawk-specific extension that lets you determine at runtime what function is to be called.
|• Built-in||Summarizes the built-in functions.|
|• User-defined||Describes User-defined functions in detail.|
|• Indirect Calls||Choosing the function to call at runtime.|
|• Functions Summary||Summary of functions.|