From 82ba818ff456bcd6d56a06226e3f27e98fbb55c3 Mon Sep 17 00:00:00 2001 From: Craig Jennings Date: Thu, 14 Aug 2025 22:58:58 -0500 Subject: removing all downloaded devdocs files --- devdocs/elisp/speed-of-byte_002dcode.html | 25 ------------------------- 1 file changed, 25 deletions(-) delete mode 100644 devdocs/elisp/speed-of-byte_002dcode.html (limited to 'devdocs/elisp/speed-of-byte_002dcode.html') diff --git a/devdocs/elisp/speed-of-byte_002dcode.html b/devdocs/elisp/speed-of-byte_002dcode.html deleted file mode 100644 index dae47485..00000000 --- a/devdocs/elisp/speed-of-byte_002dcode.html +++ /dev/null @@ -1,25 +0,0 @@ -

Performance of Byte-Compiled Code

A byte-compiled function is not as efficient as a primitive function written in C, but runs much faster than the version written in Lisp. Here is an example: 

(defun silly-loop (n)
-  "Return the time, in seconds, to run N iterations of a loop."
-  (let ((t1 (float-time)))
-    (while (> (setq n (1- n)) 0))
-    (- (float-time) t1)))
-⇒ silly-loop
-
- -
(silly-loop 50000000)
-⇒ 10.235304117202759
-
- -
(byte-compile 'silly-loop)
-⇒ [Compiled code not shown]
-
- -
(silly-loop 50000000)
-⇒ 3.705854892730713
-
-

In this example, the interpreted code required 10 seconds to run, whereas the byte-compiled code required less than 4 seconds. These results are representative, but actual results may vary.

-

- Copyright © 1990-1996, 1998-2022 Free Software Foundation, Inc.
Licensed under the GNU GPL license.
- https://www.gnu.org/software/emacs/manual/html_node/elisp/Speed-of-Byte_002dCode.html -

-
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