1use std::env;
2
3fn main() {
4 let ac = autocfg::new();
5
6 ac.emit_expression_cfg(
7 "unsafe { 1f64.to_int_unchecked::<i32>() }",
8 "has_to_int_unchecked",
9 );
10
11 ac.emit_expression_cfg("1u32.reverse_bits()", "has_reverse_bits");
12 ac.emit_expression_cfg("1u32.trailing_ones()", "has_leading_trailing_ones");
13 ac.emit_expression_cfg("1u32.div_euclid(1u32)", "has_div_euclid");
14
15 if env::var_os("CARGO_FEATURE_STD").is_some() {
16 ac.emit_expression_cfg("1f64.copysign(-1f64)", "has_copysign");
17 }
18 ac.emit_expression_cfg("1f64.is_subnormal()", "has_is_subnormal");
19
20 ac.emit_expression_cfg("1u32.to_ne_bytes()", "has_int_to_from_bytes");
21 ac.emit_expression_cfg("3.14f64.to_ne_bytes()", "has_float_to_from_bytes");
22
23 autocfg::rerun_path("build.rs");
24}
25