As a simple example, consider a package that uses cgo to call C.sin.
The following code will be generated by cgo:

	// compiled by gc

	//go:cgo_ldflag "-lm"

	type _Ctype_double float64

	//go:cgo_import_static _cgo_gcc_Cfunc_sin
	//go:linkname __cgo_gcc_Cfunc_sin _cgo_gcc_Cfunc_sin
	var __cgo_gcc_Cfunc_sin byte
	var _cgo_gcc_Cfunc_sin = unsafe.Pointer(&__cgo_gcc_Cfunc_sin)

<code>package math</code>, which exports function <code>Sin</code>, and
installed the compiled package in the file identified by
<code>"lib/math"</code>.
This table illustrates how <code>Sin</code> is accessed in files
that import the package after the
various types of import declaration.
</p>

<pre class="grammar">
Import declaration          Local name of Sin

import   "lib/math"         math.Sin

pkg debug/elf, const DF_TEXTREL DynFlag
pkg debug/elf, const DT_BIND_NOW DynTag
pkg debug/elf, const DT_DEBUG DynTag
pkg debug/elf, const DT_ENCODING DynTag
pkg debug/elf, const DT_FINI DynTag
pkg debug/elf, const DT_FINI_ARRAY DynTag
pkg debug/elf, const DT_FINI_ARRAYSZ DynTag
pkg debug/elf, const DT_FLAGS DynTag
pkg debug/elf, const DT_HASH DynTag
pkg debug/elf, const DT_HIOS DynTag
pkg debug/elf, const DT_HIPROC DynTag

pkg debug/elf, const DF_TEXTREL = 4
pkg debug/elf, const DT_BIND_NOW = 24
pkg debug/elf, const DT_DEBUG = 21
pkg debug/elf, const DT_ENCODING = 32
pkg debug/elf, const DT_FINI = 13
pkg debug/elf, const DT_FINI_ARRAY = 26
pkg debug/elf, const DT_FINI_ARRAYSZ = 28
pkg debug/elf, const DT_FLAGS = 30
pkg debug/elf, const DT_HASH = 4
pkg debug/elf, const DT_HIOS = 1879044096
pkg debug/elf, const DT_HIPROC = 2147483647