Zig 0.17.0-dev (Split by item)

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__isPlatformVersionAtLeast

os_version_check.__isPlatformVersionAtLeast

const __isPlatformVersionAtLeast = if (have_availability_version_check) struct

File

lib/compiler_rt/os_version_check.zig:32

Code

const __isPlatformVersionAtLeast = if (have_availability_version_check) struct {
    inline fn constructVersion(major: u32, minor: u32, subminor: u32) u32 {
        return ((major & 0xffff) << 16) | ((minor & 0xff) << 8) | (subminor & 0xff);
    }

    // Darwin-only
    fn __isPlatformVersionAtLeast(platform: u32, major: u32, minor: u32, subminor: u32) callconv(.c) i32 {
        const build_version = dyld_build_version_t{
            .platform = platform,
            .version = constructVersion(major, minor, subminor),
        };
        return @intFromBool(_availability_version_check(1, &[_]dyld_build_version_t{build_version}));
    }

    // _availability_version_check darwin API support.
    const dyld_platform_t = u32;
    const dyld_build_version_t = extern struct {
        platform: dyld_platform_t,
        version: u32,
    };
    // Darwin-only
    extern "c" fn _availability_version_check(count: u32, versions: [*c]const dyld_build_version_t) bool;
}.__isPlatformVersionAtLeast else struct {}