From cecd60b07d756082e5303649717bf1140b7ef060 Mon Sep 17 00:00:00 2001
From: David Peter <mail@david-peter.de>
Date: Fri, 2 Oct 2026 11:29:14 +0200
Subject: [PATCH] Use portable arithmetic in the parameter-scan example

---
 doc/hyperfine.1 | 2 +-
 src/cli.rs      | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/doc/hyperfine.1 b/doc/hyperfine.1
index 449b470..c7ba637 100644
--- a/doc/hyperfine.1
+++ b/doc/hyperfine.1
@@ -153,7 +153,7 @@ arithmetics.
 .RS
 Example:
 .RS
-\fBhyperfine\fR \fB\-P\fR size 0 3 'sleep $((2**{size}))'
+\fBhyperfine\fR \fB\-P\fR size 0 3 'sleep $((1 << {size}))'
 .RE
 .RE
 .IP
diff --git a/src/cli.rs b/src/cli.rs
index b12f6d3..f2e6e40 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -164,7 +164,7 @@ fn build_command() -> Command {
                      Example:  hyperfine -P threads 1 8 'make -j {threads}'\n\n\
                      This performs benchmarks for 'make -j 1', 'make -j 2', …, 'make -j 8'.\n\n\
                      To have the value increase following different patterns, use shell arithmetics.\n\n  \
-                     Example: hyperfine -P size 0 3 'sleep $((2**{size}))'\n\n\
+                     Example: hyperfine -P size 0 3 'sleep $((1 << {size}))'\n\n\
                      This performs benchmarks with power of 2 increases: 'sleep 1', 'sleep 2', 'sleep 4', …\n\
                      The exact syntax may vary depending on your shell and OS."
                 ),