From 2dba2525fb35dcfc79aad5bdf6c92e790d69635c Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 29 Apr 2024 06:40:20 +0200 Subject: Adding upstream version 1.3. Signed-off-by: Daniel Baumann --- ccan/ccan/minmax/_info | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 ccan/ccan/minmax/_info (limited to 'ccan/ccan/minmax/_info') diff --git a/ccan/ccan/minmax/_info b/ccan/ccan/minmax/_info new file mode 100644 index 0000000..2f6437e --- /dev/null +++ b/ccan/ccan/minmax/_info @@ -0,0 +1,48 @@ +#include "config.h" +#include +#include + +/** + * minmax - typesafe minimum and maximum functions + * + * The classic implementation of minimum / maximum macros in C can be + * very dangerous. If the two arguments have different sizes, or + * different signedness, type promotion rules can lead to very + * surprising results. + * + * This module implements typesafe versions, which will generate a + * compile time error, if the arguments have different types. + * + * Example: + * #include + * #include + * + * int main(int argc, char *argv[]) + * { + * printf("Signed max: %d\n", max(1, -1)); + * printf("Unsigned max: %u\n", max(1U, -1U)); + * return 0; + * } + * + * Author: David Gibson + * License: CC0 (Public domain) + */ +int main(int argc, char *argv[]) +{ + /* Expect exactly one argument */ + if (argc != 2) + return 1; + + if (strcmp(argv[1], "depends") == 0) { + printf("ccan/build_assert\n"); + return 0; + } + + if (strcmp(argv[1], "ccanlint") == 0) { + /* We need several gcc extensions */ + printf("tests_compile_without_features FAIL\n"); + return 0; + } + + return 1; +} -- cgit v1.2.3