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langref: Update calling convention (#24022)

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* langref: Update calling convention

* Apply suggestions from code review

Co-authored-by: Alex Rønne Petersen <alex@alexrp.com>

* langref: Just use .winapi directly

---------

Co-authored-by: Alex Rønne Petersen <alex@alexrp.com>
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Felix Rabe 2025-05-30 03:11:00 +02:00 • committed by GitHub
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doc/langref/test_functions.zig
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@ -23,8 +23,7 @@ export fn sub(a: i8, b: i8) i8 {
// dynamically. The quoted identifier after the extern keyword specifies
// the library that has the function. (e.g. "c" -> libc.so)
// The callconv specifier changes the calling convention of the function.
const WINAPI: std.builtin.CallingConvention = if (native_arch == .x86) .Stdcall else .C;
extern "kernel32" fn ExitProcess(exit_code: u32) callconv(WINAPI) noreturn;
extern "kernel32" fn ExitProcess(exit_code: u32) callconv(.winapi) noreturn;
extern "c" fn atan2(a: f64, b: f64) f64;
// The @branchHint builtin can be used to tell the optimizer that a function is rarely called ("cold").