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rust/library/compiler-builtins/testcrate/build.rs
Alex Crichton 99d7dde58d Attempt to fix tests on latest nightly
2018-05-11 16:45:30 -07:00

1169 lines
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extern crate cast;
extern crate rand;
use std::collections::HashMap;
use std::fmt::Write as FmtWrite;
use std::fs::{self, OpenOptions};
use std::io::Write;
use std::hash::{Hash, Hasher};
use std::path::PathBuf;
use std::{env, mem};
use std::fmt;
use self::cast::{f32, f64, u32, u64, u128, i32, i64, i128};
use self::rand::Rng;
const NTESTS: usize = 1_000;
fn main() {
let out_dir = PathBuf::from(env::var_os("OUT_DIR").unwrap());
let out_file = out_dir.join("generated.rs");
drop(fs::remove_file(&out_file));
let target = env::var("TARGET").unwrap();
let target_arch_arm =
target.contains("arm") ||
target.contains("thumb");
let target_arch_mips = target.contains("mips");
// TODO accept NaNs. We don't do that right now because we can't check
// for NaN-ness on the thumb targets (due to missing intrinsics)
// float/add.rs
gen(|(a, b): (MyF64, MyF64)| {
let c = a.0 + b.0;
if a.0.is_nan() || b.0.is_nan() || c.is_nan() {
None
} else {
Some(c)
}
},
"builtins::float::add::__adddf3(a, b)");
gen(|(a, b): (MyF32, MyF32)| {
let c = a.0 + b.0;
if a.0.is_nan() || b.0.is_nan() || c.is_nan() {
None
} else {
Some(c)
}
},
"builtins::float::add::__addsf3(a, b)");
if target_arch_arm {
gen(|(a, b): (MyF64, MyF64)| {
let c = a.0 + b.0;
if a.0.is_nan() || b.0.is_nan() || c.is_nan() {
None
} else {
Some(c)
}
},
"builtins::float::add::__adddf3vfp(a, b)");
gen(|(a, b): (LargeF32, LargeF32)| {
let c = a.0 + b.0;
if a.0.is_nan() || b.0.is_nan() || c.is_nan() {
None
} else {
Some(c)
}
},
"builtins::float::add::__addsf3vfp(a, b)");
}
// float/cmp.rs
gen(|(a, b): (MyF64, MyF64)| {
let (a, b) = (a.0, b.0);
if a.is_nan() || b.is_nan() {
return None;
}
if a.is_nan() || b.is_nan() {
Some(-1)
} else if a < b {
Some(-1)
} else if a > b {
Some(1)
} else {
Some(0)
}
},
"builtins::float::cmp::__gedf2(a, b)");
gen(|(a, b): (MyF32, MyF32)| {
let (a, b) = (a.0, b.0);
if a.is_nan() || b.is_nan() {
return None;
}
if a.is_nan() || b.is_nan() {
Some(-1)
} else if a < b {
Some(-1)
} else if a > b {
Some(1)
} else {
Some(0)
}
},
"builtins::float::cmp::__gesf2(a, b)");
gen(|(a, b): (MyF64, MyF64)| {
let (a, b) = (a.0, b.0);
if a.is_nan() || b.is_nan() {
return None;
}
if a.is_nan() || b.is_nan() {
Some(1)
} else if a < b {
Some(-1)
} else if a > b {
Some(1)
} else {
Some(0)
}
},
"builtins::float::cmp::__ledf2(a, b)");
gen(|(a, b): (MyF32, MyF32)| {
let (a, b) = (a.0, b.0);
if a.is_nan() || b.is_nan() {
return None;
}
if a.is_nan() || b.is_nan() {
Some(1)
} else if a < b {
Some(-1)
} else if a > b {
Some(1)
} else {
Some(0)
}
},
"builtins::float::cmp::__lesf2(a, b)");
gen(|(a, b): (MyF32, MyF32)| {
let c = a.0.is_nan() || b.0.is_nan();
Some(c as i32)
},
"builtins::float::cmp::__unordsf2(a, b)");
gen(|(a, b): (MyF64, MyF64)| {
let c = a.0.is_nan() || b.0.is_nan();
Some(c as i32)
},
"builtins::float::cmp::__unorddf2(a, b)");
if target_arch_arm {
gen(|(a, b): (MyF32, MyF32)| {
if a.0.is_nan() || b.0.is_nan() {
return None;
}
let c = (a.0 <= b.0) as i32;
Some(c)
},
"builtins::float::cmp::__aeabi_fcmple(a, b)");
gen(|(a, b): (MyF32, MyF32)| {
if a.0.is_nan() || b.0.is_nan() {
return None;
}
let c = (a.0 >= b.0) as i32;
Some(c)
},
"builtins::float::cmp::__aeabi_fcmpge(a, b)");
gen(|(a, b): (MyF32, MyF32)| {
if a.0.is_nan() || b.0.is_nan() {
return None;
}
let c = (a.0 == b.0) as i32;
Some(c)
},
"builtins::float::cmp::__aeabi_fcmpeq(a, b)");
gen(|(a, b): (MyF32, MyF32)| {
if a.0.is_nan() || b.0.is_nan() {
return None;
}
let c = (a.0 < b.0) as i32;
Some(c)
},
"builtins::float::cmp::__aeabi_fcmplt(a, b)");
gen(|(a, b): (MyF32, MyF32)| {
if a.0.is_nan() || b.0.is_nan() {
return None;
}
let c = (a.0 > b.0) as i32;
Some(c)
},
"builtins::float::cmp::__aeabi_fcmpgt(a, b)");
gen(|(a, b): (MyF64, MyF64)| {
if a.0.is_nan() || b.0.is_nan() {
return None;
}
let c = (a.0 <= b.0) as i32;
Some(c)
},
"builtins::float::cmp::__aeabi_dcmple(a, b)");
gen(|(a, b): (MyF64, MyF64)| {
if a.0.is_nan() || b.0.is_nan() {
return None;
}
let c = (a.0 >= b.0) as i32;
Some(c)
},
"builtins::float::cmp::__aeabi_dcmpge(a, b)");
gen(|(a, b): (MyF64, MyF64)| {
if a.0.is_nan() || b.0.is_nan() {
return None;
}
let c = (a.0 == b.0) as i32;
Some(c)
},
"builtins::float::cmp::__aeabi_dcmpeq(a, b)");
gen(|(a, b): (MyF64, MyF64)| {
if a.0.is_nan() || b.0.is_nan() {
return None;
}
let c = (a.0 < b.0) as i32;
Some(c)
},
"builtins::float::cmp::__aeabi_dcmplt(a, b)");
gen(|(a, b): (MyF64, MyF64)| {
if a.0.is_nan() || b.0.is_nan() {
return None;
}
let c = (a.0 > b.0) as i32;
Some(c)
},
"builtins::float::cmp::__aeabi_dcmpgt(a, b)");
gen(|(a, b): (LargeF32, LargeF32)| {
if a.0.is_nan() || b.0.is_nan() {
return None;
}
Some((a.0 >= b.0) as i32)
},
"builtins::float::cmp::__gesf2vfp(a, b)");
gen(|(a, b): (MyF64, MyF64)| {
if a.0.is_nan() || b.0.is_nan() {
return None;
}
Some((a.0 >= b.0) as i32)
},
"builtins::float::cmp::__gedf2vfp(a, b)");
gen(|(a, b): (LargeF32, LargeF32)| {
if a.0.is_nan() || b.0.is_nan() {
return None;
}
Some((a.0 > b.0) as i32)
},
"builtins::float::cmp::__gtsf2vfp(a, b)");
gen(|(a, b): (MyF64, MyF64)| {
if a.0.is_nan() || b.0.is_nan() {
return None;
}
Some((a.0 > b.0) as i32)
},
"builtins::float::cmp::__gtdf2vfp(a, b)");
gen(|(a, b): (LargeF32, LargeF32)| {
if a.0.is_nan() || b.0.is_nan() {
return None;
}
Some((a.0 < b.0) as i32)
},
"builtins::float::cmp::__ltsf2vfp(a, b)");
gen(|(a, b): (MyF64, MyF64)| {
if a.0.is_nan() || b.0.is_nan() {
return None;
}
Some((a.0 < b.0) as i32)
},
"builtins::float::cmp::__ltdf2vfp(a, b)");
gen(|(a, b): (LargeF32, LargeF32)| {
if a.0.is_nan() || b.0.is_nan() {
return None;
}
Some((a.0 <= b.0) as i32)
},
"builtins::float::cmp::__lesf2vfp(a, b)");
gen(|(a, b): (MyF64, MyF64)| {
if a.0.is_nan() || b.0.is_nan() {
return None;
}
Some((a.0 <= b.0) as i32)
},
"builtins::float::cmp::__ledf2vfp(a, b)");
gen(|(a, b): (LargeF32, LargeF32)| {
if a.0.is_nan() || b.0.is_nan() {
return None;
}
Some((a.0 != b.0) as i32)
},
"builtins::float::cmp::__nesf2vfp(a, b)");
gen(|(a, b): (MyF64, MyF64)| {
if a.0.is_nan() || b.0.is_nan() {
return None;
}
Some((a.0 != b.0) as i32)
},
"builtins::float::cmp::__nedf2vfp(a, b)");
gen(|(a, b): (LargeF32, LargeF32)| {
if a.0.is_nan() || b.0.is_nan() {
return None;
}
Some((a.0 == b.0) as i32)
},
"builtins::float::cmp::__eqsf2vfp(a, b)");
gen(|(a, b): (MyF64, MyF64)| {
if a.0.is_nan() || b.0.is_nan() {
return None;
}
Some((a.0 == b.0) as i32)
},
"builtins::float::cmp::__eqdf2vfp(a, b)");
}
// float/extend.rs
gen(|a: MyF32| {
if a.0.is_nan() {
return None;
}
Some(f64(a.0))
},
"builtins::float::extend::__extendsfdf2(a)");
if target_arch_arm {
gen(|a: LargeF32| {
if a.0.is_nan() {
return None;
}
Some(f64(a.0))
},
"builtins::float::extend::__extendsfdf2vfp(a)");
}
// float/conv.rs
gen(|a: MyF64| i64(a.0).ok(),
"builtins::float::conv::__fixdfdi(a)");
gen(|a: MyF64| i32(a.0).ok(),
"builtins::float::conv::__fixdfsi(a)");
gen(|a: MyF32| i64(a.0).ok(),
"builtins::float::conv::__fixsfdi(a)");
gen(|a: MyF32| i32(a.0).ok(),
"builtins::float::conv::__fixsfsi(a)");
gen(|a: MyF32| i128(a.0).ok(),
"builtins::float::conv::__fixsfti(a)");
gen(|a: MyF64| i128(a.0).ok(),
"builtins::float::conv::__fixdfti(a)");
gen(|a: MyF64| u64(a.0).ok(),
"builtins::float::conv::__fixunsdfdi(a)");
gen(|a: MyF64| u32(a.0).ok(),
"builtins::float::conv::__fixunsdfsi(a)");
gen(|a: MyF32| u64(a.0).ok(),
"builtins::float::conv::__fixunssfdi(a)");
gen(|a: MyF32| u32(a.0).ok(),
"builtins::float::conv::__fixunssfsi(a)");
gen(|a: MyF32| u128(a.0).ok(),
"builtins::float::conv::__fixunssfti(a)");
gen(|a: MyF64| u128(a.0).ok(),
"builtins::float::conv::__fixunsdfti(a)");
gen(|a: MyI64| Some(f64(a.0)),
"builtins::float::conv::__floatdidf(a)");
gen(|a: MyI32| Some(f64(a.0)),
"builtins::float::conv::__floatsidf(a)");
gen(|a: MyI32| Some(f32(a.0)),
"builtins::float::conv::__floatsisf(a)");
gen(|a: MyU64| Some(f64(a.0)),
"builtins::float::conv::__floatundidf(a)");
gen(|a: MyU32| Some(f64(a.0)),
"builtins::float::conv::__floatunsidf(a)");
gen(|a: MyU32| Some(f32(a.0)),
"builtins::float::conv::__floatunsisf(a)");
gen(|a: MyU128| f32(a.0).ok(),
"builtins::float::conv::__floatuntisf(a)");
if !target_arch_mips {
gen(|a: MyI128| Some(f32(a.0)),
"builtins::float::conv::__floattisf(a)");
gen(|a: MyI128| Some(f64(a.0)),
"builtins::float::conv::__floattidf(a)");
gen(|a: MyU128| Some(f64(a.0)),
"builtins::float::conv::__floatuntidf(a)");
}
// float/pow.rs
gen(|(a, b): (MyF64, MyI32)| {
let c = a.0.powi(b.0);
if a.0.is_nan() || c.is_nan() {
None
} else {
Some(c)
}
},
"builtins::float::pow::__powidf2(a, b)");
gen(|(a, b): (MyF32, MyI32)| {
let c = a.0.powi(b.0);
if a.0.is_nan() || c.is_nan() {
None
} else {
Some(c)
}
},
"builtins::float::pow::__powisf2(a, b)");
// float/sub.rs
gen(|(a, b): (MyF64, MyF64)| {
let c = a.0 - b.0;
if a.0.is_nan() || b.0.is_nan() || c.is_nan() {
None
} else {
Some(c)
}
},
"builtins::float::sub::__subdf3(a, b)");
gen(|(a, b): (MyF32, MyF32)| {
let c = a.0 - b.0;
if a.0.is_nan() || b.0.is_nan() || c.is_nan() {
None
} else {
Some(c)
}
},
"builtins::float::sub::__subsf3(a, b)");
if target_arch_arm {
gen(|(a, b): (MyF64, MyF64)| {
let c = a.0 - b.0;
if a.0.is_nan() || b.0.is_nan() || c.is_nan() {
None
} else {
Some(c)
}
},
"builtins::float::sub::__subdf3vfp(a, b)");
gen(|(a, b): (LargeF32, LargeF32)| {
let c = a.0 - b.0;
if a.0.is_nan() || b.0.is_nan() || c.is_nan() {
None
} else {
Some(c)
}
},
"builtins::float::sub::__subsf3vfp(a, b)");
}
// float/mul.rs
gen(|(a, b): (MyF64, MyF64)| {
let c = a.0 * b.0;
if a.0.is_nan() || b.0.is_nan() || c.is_nan() {
None
} else {
Some(c)
}
},
"builtins::float::mul::__muldf3(a, b)");
gen(|(a, b): (LargeF32, LargeF32)| {
let c = a.0 * b.0;
if a.0.is_nan() || b.0.is_nan() || c.is_nan() {
None
} else {
Some(c)
}
},
"builtins::float::mul::__mulsf3(a, b)");
if target_arch_arm {
gen(|(a, b): (MyF64, MyF64)| {
let c = a.0 * b.0;
if a.0.is_nan() || b.0.is_nan() || c.is_nan() {
None
} else {
Some(c)
}
},
"builtins::float::mul::__muldf3vfp(a, b)");
gen(|(a, b): (LargeF32, LargeF32)| {
let c = a.0 * b.0;
if a.0.is_nan() || b.0.is_nan() || c.is_nan() {
None
} else {
Some(c)
}
},
"builtins::float::mul::__mulsf3vfp(a, b)");
}
// float/div.rs
gen(|(a, b): (MyF64, MyF64)| {
if b.0 == 0.0 {
return None
}
let c = a.0 / b.0;
if a.0.is_nan() || b.0.is_nan() || c.is_nan() ||
c.abs() <= unsafe { mem::transmute(4503599627370495u64) }
{
None
} else {
Some(c)
}
},
"builtins::float::div::__divdf3(a, b)");
gen(|(a, b): (LargeF32, LargeF32)| {
if b.0 == 0.0 {
return None
}
let c = a.0 / b.0;
if a.0.is_nan() || b.0.is_nan() || c.is_nan() ||
c.abs() <= unsafe { mem::transmute(16777215u32) }
{
None
} else {
Some(c)
}
},
"builtins::float::div::__divsf3(a, b)");
if target_arch_arm {
gen(|(a, b): (MyF64, MyF64)| {
if b.0 == 0.0 {
return None
}
let c = a.0 / b.0;
if a.0.is_nan() || b.0.is_nan() || c.is_nan() ||
c.abs() <= unsafe { mem::transmute(4503599627370495u64) }
{
None
} else {
Some(c)
}
},
"builtins::float::div::__divdf3vfp(a, b)");
gen(|(a, b): (LargeF32, LargeF32)| {
if b.0 == 0.0 {
return None
}
let c = a.0 / b.0;
if a.0.is_nan() || b.0.is_nan() || c.is_nan() ||
c.abs() <= unsafe { mem::transmute(16777215u32) }
{
None
} else {
Some(c)
}
},
"builtins::float::div::__divsf3vfp(a, b)");
}
// int/addsub.rs
gen(|(a, b): (MyU128, MyU128)| Some(a.0.wrapping_add(b.0)),
"builtins::int::addsub::rust_u128_add(a, b)");
gen(|(a, b): (MyI128, MyI128)| Some(a.0.wrapping_add(b.0)),
"builtins::int::addsub::rust_i128_add(a, b)");
gen(|(a, b): (MyU128, MyU128)| Some(a.0.overflowing_add(b.0)),
"builtins::int::addsub::rust_u128_addo(a, b)");
gen(|(a, b): (MyI128, MyI128)| Some(a.0.overflowing_add(b.0)),
"builtins::int::addsub::rust_i128_addo(a, b)");
gen(|(a, b): (MyU128, MyU128)| Some(a.0.wrapping_sub(b.0)),
"builtins::int::addsub::rust_u128_sub(a, b)");
gen(|(a, b): (MyI128, MyI128)| Some(a.0.wrapping_sub(b.0)),
"builtins::int::addsub::rust_i128_sub(a, b)");
gen(|(a, b): (MyU128, MyU128)| Some(a.0.overflowing_sub(b.0)),
"builtins::int::addsub::rust_u128_subo(a, b)");
gen(|(a, b): (MyI128, MyI128)| Some(a.0.overflowing_sub(b.0)),
"builtins::int::addsub::rust_i128_subo(a, b)");
// int/mul.rs
gen(|(a, b): (MyU64, MyU64)| Some(a.0.wrapping_mul(b.0)),
"builtins::int::mul::__muldi3(a, b)");
gen(|(a, b): (MyI64, MyI64)| Some(a.0.overflowing_mul(b.0)),
"{
let mut o = 2;
let c = builtins::int::mul::__mulodi4(a, b, &mut o);
(c, match o { 0 => false, 1 => true, _ => panic!() })
}");
gen(|(a, b): (MyI32, MyI32)| Some(a.0.overflowing_mul(b.0)),
"{
let mut o = 2;
let c = builtins::int::mul::__mulosi4(a, b, &mut o);
(c, match o { 0 => false, 1 => true, _ => panic!() })
}");
gen(|(a, b): (MyI128, MyI128)| Some(a.0.wrapping_mul(b.0)),
"builtins::int::mul::__multi3(a, b)");
if !target_arch_mips { // FIXME(#137)
gen(|(a, b): (MyI128, MyI128)| Some(a.0.overflowing_mul(b.0)),
"{
let mut o = 2;
let c = builtins::int::mul::__muloti4(a, b, &mut o);
(c, match o { 0 => false, 1 => true, _ => panic!() })
}");
}
// int/sdiv.rs
gen(|(a, b): (MyI64, MyI64)| {
if b.0 == 0 {
None
} else {
Some(a.0 / b.0)
}
},
"builtins::int::sdiv::__divdi3(a, b)");
gen(|(a, b): (MyI64, MyI64)| {
if b.0 == 0 {
None
} else {
Some((a.0 / b.0, a.0 % b.0))
}
},
"{
let mut r = 0;
(builtins::int::sdiv::__divmoddi4(a, b, &mut r), r)
}");
gen(|(a, b): (MyI32, MyI32)| {
if b.0 == 0 {
None
} else {
Some((a.0 / b.0, a.0 % b.0))
}
},
"{
let mut r = 0;
(builtins::int::sdiv::__divmodsi4(a, b, &mut r), r)
}");
gen(|(a, b): (MyI32, MyI32)| {
if b.0 == 0 {
None
} else {
Some(a.0 / b.0)
}
},
"builtins::int::sdiv::__divsi3(a, b)");
gen(|(a, b): (MyI32, MyI32)| {
if b.0 == 0 {
None
} else {
Some(a.0 % b.0)
}
},
"builtins::int::sdiv::__modsi3(a, b)");
gen(|(a, b): (MyI64, MyI64)| {
if b.0 == 0 {
None
} else {
Some(a.0 % b.0)
}
},
"builtins::int::sdiv::__moddi3(a, b)");
if !target_arch_mips { // FIXME(#137)
gen(|(a, b): (MyI128, MyI128)| {
if b.0 == 0 {
None
} else {
Some(a.0 / b.0)
}
},
"builtins::int::sdiv::__divti3(a, b)");
gen(|(a, b): (MyI128, MyI128)| {
if b.0 == 0 {
None
} else {
Some(a.0 % b.0)
}
},
"builtins::int::sdiv::__modti3(a, b)");
}
// int/shift.rs
gen(|(a, b): (MyU64, MyU32)| Some(a.0 << (b.0 % 64)),
"builtins::int::shift::__ashldi3(a, b % 64)");
gen(|(a, b): (MyU128, MyU32)| Some(a.0 << (b.0 % 128)),
"builtins::int::shift::__ashlti3(a, b % 128)");
gen(|(a, b): (MyI64, MyU32)| Some(a.0 >> (b.0 % 64)),
"builtins::int::shift::__ashrdi3(a, b % 64)");
gen(|(a, b): (MyI128, MyU32)| Some(a.0 >> (b.0 % 128)),
"builtins::int::shift::__ashrti3(a, b % 128)");
gen(|(a, b): (MyU64, MyU32)| Some(a.0 >> (b.0 % 64)),
"builtins::int::shift::__lshrdi3(a, b % 64)");
gen(|(a, b): (MyU128, MyU32)| Some(a.0 >> (b.0 % 128)),
"builtins::int::shift::__lshrti3(a, b % 128)");
// int/udiv.rs
gen(|(a, b): (MyU64, MyU64)| {
if b.0 == 0 {
None
} else {
Some(a.0 / b.0)
}
},
"builtins::int::udiv::__udivdi3(a, b)");
gen(|(a, b): (MyU64, MyU64)| {
if b.0 == 0 {
None
} else {
Some((a.0 / b.0, a.0 % b.0))
}
},
"{
let mut r = 0;
(builtins::int::udiv::__udivmoddi4(a, b, Some(&mut r)), r)
}");
gen(|(a, b): (MyU32, MyU32)| {
if b.0 == 0 {
None
} else {
Some((a.0 / b.0, a.0 % b.0))
}
},
"{
let mut r = 0;
(builtins::int::udiv::__udivmodsi4(a, b, Some(&mut r)), r)
}");
gen(|(a, b): (MyU32, MyU32)| {
if b.0 == 0 {
None
} else {
Some(a.0 / b.0)
}
},
"builtins::int::udiv::__udivsi3(a, b)");
gen(|(a, b): (MyU32, MyU32)| {
if b.0 == 0 {
None
} else {
Some(a.0 % b.0)
}
},
"builtins::int::udiv::__umodsi3(a, b)");
gen(|(a, b): (MyU64, MyU64)| {
if b.0 == 0 {
None
} else {
Some(a.0 % b.0)
}
},
"builtins::int::udiv::__umoddi3(a, b)");
if !target_arch_mips { // FIXME(#137)
gen(|(a, b): (MyU128, MyU128)| {
if b.0 == 0 {
None
} else {
Some(a.0 / b.0)
}
},
"builtins::int::udiv::__udivti3(a, b)");
gen(|(a, b): (MyU128, MyU128)| {
if b.0 == 0 {
None
} else {
Some(a.0 % b.0)
}
},
"builtins::int::udiv::__umodti3(a, b)");
gen(|(a, b): (MyU128, MyU128)| {
if b.0 == 0 {
None
} else {
Some((a.0 / b.0, a.0 % b.0))
}
},
"{
let mut r = 0;
(builtins::int::udiv::__udivmodti4(a, b, Some(&mut r)), r)
}");
}
}
macro_rules! gen_float {
($name:ident,
$fty:ident,
$uty:ident,
$bits:expr,
$significand_bits:expr) => {
pub fn $name<R>(rng: &mut R) -> $fty
where
R: Rng,
{
const BITS: u8 = $bits;
const SIGNIFICAND_BITS: u8 = $significand_bits;
const SIGNIFICAND_MASK: $uty = (1 << SIGNIFICAND_BITS) - 1;
const SIGN_MASK: $uty = (1 << (BITS - 1));
const EXPONENT_MASK: $uty = !(SIGN_MASK | SIGNIFICAND_MASK);
fn mk_f32(sign: bool, exponent: $uty, significand: $uty) -> $fty {
unsafe {
mem::transmute(((sign as $uty) << (BITS - 1)) |
((exponent & EXPONENT_MASK) <<
SIGNIFICAND_BITS) |
(significand & SIGNIFICAND_MASK))
}
}
if rng.gen_weighted_bool(10) {
// Special values
*rng.choose(&[-0.0,
0.0,
::std::$fty::MIN,
::std::$fty::MIN_POSITIVE,
::std::$fty::MAX,
::std::$fty::NAN,
::std::$fty::INFINITY,
-::std::$fty::INFINITY])
.unwrap()
} else if rng.gen_weighted_bool(10) {
// NaN patterns
mk_f32(rng.gen(), rng.gen(), 0)
} else if rng.gen() {
// Denormalized
mk_f32(rng.gen(), 0, rng.gen())
} else {
// Random anything
mk_f32(rng.gen(), rng.gen(), rng.gen())
}
}
}
}
gen_float!(gen_f32, f32, u32, 32, 23);
gen_float!(gen_f64, f64, u64, 64, 52);
macro_rules! gen_large_float {
($name:ident,
$fty:ident,
$uty:ident,
$bits:expr,
$significand_bits:expr) => {
pub fn $name<R>(rng: &mut R) -> $fty
where
R: Rng,
{
const BITS: u8 = $bits;
const SIGNIFICAND_BITS: u8 = $significand_bits;
const SIGNIFICAND_MASK: $uty = (1 << SIGNIFICAND_BITS) - 1;
const SIGN_MASK: $uty = (1 << (BITS - 1));
const EXPONENT_MASK: $uty = !(SIGN_MASK | SIGNIFICAND_MASK);
fn mk_f32(sign: bool, exponent: $uty, significand: $uty) -> $fty {
unsafe {
mem::transmute(((sign as $uty) << (BITS - 1)) |
((exponent & EXPONENT_MASK) <<
SIGNIFICAND_BITS) |
(significand & SIGNIFICAND_MASK))
}
}
if rng.gen_weighted_bool(10) {
// Special values
*rng.choose(&[-0.0,
0.0,
::std::$fty::MIN,
::std::$fty::MIN_POSITIVE,
::std::$fty::MAX,
::std::$fty::NAN,
::std::$fty::INFINITY,
-::std::$fty::INFINITY])
.unwrap()
} else if rng.gen_weighted_bool(10) {
// NaN patterns
mk_f32(rng.gen(), rng.gen(), 0)
} else if rng.gen() {
// Denormalized
mk_f32(rng.gen(), 0, rng.gen())
} else {
// Random anything
rng.gen::<$fty>()
}
}
}
}
gen_large_float!(gen_large_f32, f32, u32, 32, 23);
gen_large_float!(gen_large_f64, f64, u64, 64, 52);
trait TestInput: rand::Rand + Hash + Eq + fmt::Debug {
fn ty_name() -> String;
fn generate_lets(container: &str, cnt: &mut u8) -> String;
fn generate_static(&self, dst: &mut String);
}
trait TestOutput {
fn ty_name() -> String;
fn generate_static(&self, dst: &mut String);
fn generate_expr(container: &str) -> String;
}
fn gen<F, A, R>(mut generate: F, test: &str)
where F: FnMut(A) -> Option<R>,
A: TestInput + Copy,
R: TestOutput,
{
let rng = &mut rand::thread_rng();
let testname = test.split("::")
.last()
.unwrap()
.split("(")
.next()
.unwrap();
let out_dir = PathBuf::from(env::var_os("OUT_DIR").unwrap());
let out_file = out_dir.join("generated.rs");
let mut testcases = HashMap::new();
let mut n = NTESTS;
while n > 0 {
let input: A = rng.gen();
if testcases.contains_key(&input) {
continue
}
let output = match generate(input) {
Some(o) => o,
None => continue,
};
testcases.insert(input, output);
n -= 1;
}
let mut contents = String::new();
contents.push_str(&format!("mod {} {{\nuse super::*;\n", testname));
contents.push_str("#[test]\n");
contents.push_str("fn test() {\n");
contents.push_str(&format!("static TESTS: [({}, {}); {}] = [\n",
A::ty_name(),
R::ty_name(),
NTESTS));
for (input, output) in testcases {
contents.push_str(" (");
input.generate_static(&mut contents);
contents.push_str(", ");
output.generate_static(&mut contents);
contents.push_str("),\n");
}
contents.push_str("];\n");
contents.push_str(&format!(r#"
for &(inputs, output) in TESTS.iter() {{
{}
assert_eq!({}, {}, "inputs {{:?}}", inputs)
}}
"#,
A::generate_lets("inputs", &mut 0),
R::generate_expr("output"),
test,
));
contents.push_str("\n}\n");
contents.push_str("\n}\n");
OpenOptions::new()
.write(true)
.append(true)
.create(true)
.open(out_file)
.unwrap()
.write_all(contents.as_bytes())
.unwrap();
}
macro_rules! my_float {
($(struct $name:ident($inner:ident) = $gen:ident;)*) => ($(
#[derive(Debug, Clone, Copy)]
struct $name($inner);
impl TestInput for $name {
fn ty_name() -> String {
format!("u{}", &stringify!($inner)[1..])
}
fn generate_lets(container: &str, cnt: &mut u8) -> String {
let me = *cnt;
*cnt += 1;
format!("let {} = {}::from_bits({});\n",
(b'a' + me) as char,
stringify!($inner),
container)
}
fn generate_static(&self, dst: &mut String) {
write!(dst, "{}", self.0.to_bits()).unwrap();
}
}
impl rand::Rand for $name {
fn rand<R: rand::Rng>(r: &mut R) -> $name {
$name($gen(r))
}
}
impl Hash for $name {
fn hash<H: Hasher>(&self, h: &mut H) {
self.0.to_bits().hash(h)
}
}
impl PartialEq for $name {
fn eq(&self, other: &$name) -> bool {
self.0.to_bits() == other.0.to_bits()
}
}
impl Eq for $name {}
)*)
}
my_float! {
struct MyF64(f64) = gen_f64;
struct LargeF64(f64) = gen_large_f64;
struct MyF32(f32) = gen_f32;
struct LargeF32(f32) = gen_large_f32;
}
macro_rules! my_integer {
($(struct $name:ident($inner:ident);)*) => ($(
#[derive(Debug, Clone, Copy, Hash, PartialEq, Eq)]
struct $name($inner);
impl TestInput for $name {
fn ty_name() -> String {
stringify!($inner).to_string()
}
fn generate_lets(container: &str, cnt: &mut u8) -> String {
let me = *cnt;
*cnt += 1;
format!("let {} = {};\n",
(b'a' + me) as char,
container)
}
fn generate_static(&self, dst: &mut String) {
write!(dst, "{}", self.0).unwrap();
}
}
impl rand::Rand for $name {
fn rand<R: rand::Rng>(rng: &mut R) -> $name {
let bits = (0 as $inner).count_zeros();
let mut mk = || {
if rng.gen_weighted_bool(10) {
*rng.choose(&[
::std::$inner::MAX >> (bits / 2),
0,
::std::$inner::MIN >> (bits / 2),
]).unwrap()
} else {
rng.gen::<$inner>()
}
};
let a = mk();
let b = mk();
$name((a << (bits / 2)) | (b & (!0 << (bits / 2))))
}
}
)*)
}
my_integer! {
struct MyI32(i32);
struct MyI64(i64);
struct MyI128(i128);
struct MyU32(u32);
struct MyU64(u64);
struct MyU128(u128);
}
impl<A, B> TestInput for (A, B)
where A: TestInput,
B: TestInput,
{
fn ty_name() -> String {
format!("({}, {})", A::ty_name(), B::ty_name())
}
fn generate_lets(container: &str, cnt: &mut u8) -> String {
format!("{}{}",
A::generate_lets(&format!("{}.0", container), cnt),
B::generate_lets(&format!("{}.1", container), cnt))
}
fn generate_static(&self, dst: &mut String) {
dst.push_str("(");
self.0.generate_static(dst);
dst.push_str(", ");
self.1.generate_static(dst);
dst.push_str(")");
}
}
impl TestOutput for f64 {
fn ty_name() -> String {
"u64".to_string()
}
fn generate_static(&self, dst: &mut String) {
write!(dst, "{}", self.to_bits()).unwrap();
}
fn generate_expr(container: &str) -> String {
format!("f64::from_bits({})", container)
}
}
impl TestOutput for f32 {
fn ty_name() -> String {
"u32".to_string()
}
fn generate_static(&self, dst: &mut String) {
write!(dst, "{}", self.to_bits()).unwrap();
}
fn generate_expr(container: &str) -> String {
format!("f32::from_bits({})", container)
}
}
macro_rules! plain_test_output {
($($i:tt)*) => ($(
impl TestOutput for $i {
fn ty_name() -> String {
stringify!($i).to_string()
}
fn generate_static(&self, dst: &mut String) {
write!(dst, "{}", self).unwrap();
}
fn generate_expr(container: &str) -> String {
container.to_string()
}
}
)*)
}
plain_test_output!(i32 i64 i128 u32 u64 u128 bool);
impl<A, B> TestOutput for (A, B)
where A: TestOutput,
B: TestOutput,
{
fn ty_name() -> String {
format!("({}, {})", A::ty_name(), B::ty_name())
}
fn generate_static(&self, dst: &mut String) {
dst.push_str("(");
self.0.generate_static(dst);
dst.push_str(", ");
self.1.generate_static(dst);
dst.push_str(")");
}
fn generate_expr(container: &str) -> String {
container.to_string()
}
}
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