Nixyri/zig
1
0
Fork 0
mirror of https://github.com/ziglang/zig.git synced 2024-11-14 16:13:24 +00:00
Code Issues Packages Projects Releases Wiki Activity
master
zig/lib/compiler_rt/int.zig
mlugg cf39652500
compiler_rt: remove bogus tests 
These only worked before because our lowering of the `AAPCS` calling
convention was incorrect in a way which happened to match the ABI of
these functions. The tests aren't actually very helpful -- there are
already tests for `divmoddi4` etc -- so rather than using inline asm on
the caller side to match the ABI, we just delete these two tests.

We were for some reason missing a direct test for `__udivmodsi4`, so one
has been added.
2024-10-19 19:44:53 +01:00

666 lines
27 KiB
Zig
Raw Permalink Blame History

//! Builtin functions that operate on integer types
const builtin = @import("builtin");
const std = @import("std");
const testing = std.testing;
const maxInt = std.math.maxInt;
const minInt = std.math.minInt;
const arch = builtin.cpu.arch;
const is_test = builtin.is_test;
const common = @import("common.zig");
const udivmod = @import("udivmod.zig").udivmod;
const __divti3 = @import("divti3.zig").__divti3;
pub const panic = common.panic;
comptime {
@export(&__divmodti4, .{ .name = "__divmodti4", .linkage = common.linkage, .visibility = common.visibility });
@export(&__udivmoddi4, .{ .name = "__udivmoddi4", .linkage = common.linkage, .visibility = common.visibility });
@export(&__divmoddi4, .{ .name = "__divmoddi4", .linkage = common.linkage, .visibility = common.visibility });
if (common.want_aeabi) {
@export(&__aeabi_idiv, .{ .name = "__aeabi_idiv", .linkage = common.linkage, .visibility = common.visibility });
@export(&__aeabi_uidiv, .{ .name = "__aeabi_uidiv", .linkage = common.linkage, .visibility = common.visibility });
} else {
@export(&__divsi3, .{ .name = "__divsi3", .linkage = common.linkage, .visibility = common.visibility });
@export(&__udivsi3, .{ .name = "__udivsi3", .linkage = common.linkage, .visibility = common.visibility });
}
@export(&__divdi3, .{ .name = "__divdi3", .linkage = common.linkage, .visibility = common.visibility });
@export(&__udivdi3, .{ .name = "__udivdi3", .linkage = common.linkage, .visibility = common.visibility });
@export(&__modsi3, .{ .name = "__modsi3", .linkage = common.linkage, .visibility = common.visibility });
@export(&__moddi3, .{ .name = "__moddi3", .linkage = common.linkage, .visibility = common.visibility });
@export(&__umodsi3, .{ .name = "__umodsi3", .linkage = common.linkage, .visibility = common.visibility });
@export(&__umoddi3, .{ .name = "__umoddi3", .linkage = common.linkage, .visibility = common.visibility });
@export(&__divmodsi4, .{ .name = "__divmodsi4", .linkage = common.linkage, .visibility = common.visibility });
@export(&__udivmodsi4, .{ .name = "__udivmodsi4", .linkage = common.linkage, .visibility = common.visibility });
}
pub fn __divmodti4(a: i128, b: i128, rem: *i128) callconv(.C) i128 {
const d = __divti3(a, b);
rem.* = a -% (d * b);
return d;
}
test "test_divmodti4" {
const cases = [_][4]i128{
[_]i128{ 0, 1, 0, 0 },
[_]i128{ 0, -1, 0, 0 },
[_]i128{ 2, 1, 2, 0 },
[_]i128{ 2, -1, -2, 0 },
[_]i128{ -2, 1, -2, 0 },
[_]i128{ -2, -1, 2, 0 },
[_]i128{ 7, 5, 1, 2 },
[_]i128{ -7, 5, -1, -2 },
[_]i128{ 19, 5, 3, 4 },
[_]i128{ 19, -5, -3, 4 },
[_]i128{ @bitCast(@as(u128, 0x80000000000000000000000000000000)), 8, @bitCast(@as(u128, 0xf0000000000000000000000000000000)), 0 },
[_]i128{ @bitCast(@as(u128, 0x80000000000000000000000000000007)), 8, @bitCast(@as(u128, 0xf0000000000000000000000000000001)), -1 },
};
for (cases) |case| {
try test_one_divmodti4(case[0], case[1], case[2], case[3]);
}
}
fn test_one_divmodti4(a: i128, b: i128, expected_q: i128, expected_r: i128) !void {
var r: i128 = undefined;
const q: i128 = __divmodti4(a, b, &r);
try testing.expect(q == expected_q and r == expected_r);
}
pub fn __divmoddi4(a: i64, b: i64, rem: *i64) callconv(.C) i64 {
const d = __divdi3(a, b);
rem.* = a -% (d * b);
return d;
}
fn test_one_divmoddi4(a: i64, b: i64, expected_q: i64, expected_r: i64) !void {
var r: i64 = undefined;
const q: i64 = __divmoddi4(a, b, &r);
try testing.expect(q == expected_q and r == expected_r);
}
const cases__divmoddi4 =
[_][4]i64{
[_]i64{ 0, 1, 0, 0 },
[_]i64{ 0, -1, 0, 0 },
[_]i64{ 2, 1, 2, 0 },
[_]i64{ 2, -1, -2, 0 },
[_]i64{ -2, 1, -2, 0 },
[_]i64{ -2, -1, 2, 0 },
[_]i64{ 7, 5, 1, 2 },
[_]i64{ -7, 5, -1, -2 },
[_]i64{ 19, 5, 3, 4 },
[_]i64{ 19, -5, -3, 4 },
[_]i64{ @as(i64, @bitCast(@as(u64, 0x8000000000000000))), 8, @as(i64, @bitCast(@as(u64, 0xf000000000000000))), 0 },
[_]i64{ @as(i64, @bitCast(@as(u64, 0x8000000000000007))), 8, @as(i64, @bitCast(@as(u64, 0xf000000000000001))), -1 },
};
test "test_divmoddi4" {
for (cases__divmoddi4) |case| {
try test_one_divmoddi4(case[0], case[1], case[2], case[3]);
}
}
pub fn __udivmoddi4(a: u64, b: u64, maybe_rem: ?*u64) callconv(.C) u64 {
return udivmod(u64, a, b, maybe_rem);
}
test "test_udivmoddi4" {
_ = @import("udivmoddi4_test.zig");
}
pub fn __divdi3(a: i64, b: i64) callconv(.C) i64 {
// Set aside the sign of the quotient.
const sign: u64 = @bitCast((a ^ b) >> 63);
// Take absolute value of a and b via abs(x) = (x^(x >> 63)) - (x >> 63).
const abs_a = (a ^ (a >> 63)) -% (a >> 63);
const abs_b = (b ^ (b >> 63)) -% (b >> 63);
// Unsigned division
const res = __udivmoddi4(@bitCast(abs_a), @bitCast(abs_b), null);
// Apply sign of quotient to result and return.
return @bitCast((res ^ sign) -% sign);
}
test "test_divdi3" {
const cases = [_][3]i64{
[_]i64{ 0, 1, 0 },
[_]i64{ 0, -1, 0 },
[_]i64{ 2, 1, 2 },
[_]i64{ 2, -1, -2 },
[_]i64{ -2, 1, -2 },
[_]i64{ -2, -1, 2 },
[_]i64{ @as(i64, @bitCast(@as(u64, 0x8000000000000000))), 1, @as(i64, @bitCast(@as(u64, 0x8000000000000000))) },
[_]i64{ @as(i64, @bitCast(@as(u64, 0x8000000000000000))), -1, @as(i64, @bitCast(@as(u64, 0x8000000000000000))) },
[_]i64{ @as(i64, @bitCast(@as(u64, 0x8000000000000000))), -2, 0x4000000000000000 },
[_]i64{ @as(i64, @bitCast(@as(u64, 0x8000000000000000))), 2, @as(i64, @bitCast(@as(u64, 0xC000000000000000))) },
};
for (cases) |case| {
try test_one_divdi3(case[0], case[1], case[2]);
}
}
fn test_one_divdi3(a: i64, b: i64, expected_q: i64) !void {
const q: i64 = __divdi3(a, b);
try testing.expect(q == expected_q);
}
pub fn __moddi3(a: i64, b: i64) callconv(.C) i64 {
// Take absolute value of a and b via abs(x) = (x^(x >> 63)) - (x >> 63).
const abs_a = (a ^ (a >> 63)) -% (a >> 63);
const abs_b = (b ^ (b >> 63)) -% (b >> 63);
// Unsigned division
var r: u64 = undefined;
_ = __udivmoddi4(@bitCast(abs_a), @bitCast(abs_b), &r);
// Apply the sign of the dividend and return.
return (@as(i64, @bitCast(r)) ^ (a >> 63)) -% (a >> 63);
}
test "test_moddi3" {
const cases = [_][3]i64{
[_]i64{ 0, 1, 0 },
[_]i64{ 0, -1, 0 },
[_]i64{ 5, 3, 2 },
[_]i64{ 5, -3, 2 },
[_]i64{ -5, 3, -2 },
[_]i64{ -5, -3, -2 },
[_]i64{ @bitCast(@as(u64, 0x8000000000000000)), 1, 0 },
[_]i64{ @bitCast(@as(u64, 0x8000000000000000)), -1, 0 },
[_]i64{ @bitCast(@as(u64, 0x8000000000000000)), 2, 0 },
[_]i64{ @bitCast(@as(u64, 0x8000000000000000)), -2, 0 },
[_]i64{ @bitCast(@as(u64, 0x8000000000000000)), 3, -2 },
[_]i64{ @bitCast(@as(u64, 0x8000000000000000)), -3, -2 },
};
for (cases) |case| {
try test_one_moddi3(case[0], case[1], case[2]);
}
}
fn test_one_moddi3(a: i64, b: i64, expected_r: i64) !void {
const r: i64 = __moddi3(a, b);
try testing.expect(r == expected_r);
}
pub fn __udivdi3(a: u64, b: u64) callconv(.C) u64 {
return __udivmoddi4(a, b, null);
}
pub fn __umoddi3(a: u64, b: u64) callconv(.C) u64 {
var r: u64 = undefined;
_ = __udivmoddi4(a, b, &r);
return r;
}
test "test_umoddi3" {
try test_one_umoddi3(0, 1, 0);
try test_one_umoddi3(2, 1, 0);
try test_one_umoddi3(0x8000000000000000, 1, 0x0);
try test_one_umoddi3(0x8000000000000000, 2, 0x0);
try test_one_umoddi3(0xFFFFFFFFFFFFFFFF, 2, 0x1);
}
fn test_one_umoddi3(a: u64, b: u64, expected_r: u64) !void {
const r = __umoddi3(a, b);
try testing.expect(r == expected_r);
}
pub fn __divmodsi4(a: i32, b: i32, rem: *i32) callconv(.C) i32 {
const d = __divsi3(a, b);
rem.* = a -% (d * b);
return d;
}
const cases__divmodsi4 =
[_][4]i32{
[_]i32{ 0, 1, 0, 0 },
[_]i32{ 0, -1, 0, 0 },
[_]i32{ 2, 1, 2, 0 },
[_]i32{ 2, -1, -2, 0 },
[_]i32{ -2, 1, -2, 0 },
[_]i32{ -2, -1, 2, 0 },
[_]i32{ 7, 5, 1, 2 },
[_]i32{ -7, 5, -1, -2 },
[_]i32{ 19, 5, 3, 4 },
[_]i32{ 19, -5, -3, 4 },
[_]i32{ @bitCast(@as(u32, 0x80000000)), 8, @bitCast(@as(u32, 0xf0000000)), 0 },
[_]i32{ @bitCast(@as(u32, 0x80000007)), 8, @bitCast(@as(u32, 0xf0000001)), -1 },
};
fn test_one_divmodsi4(a: i32, b: i32, expected_q: i32, expected_r: i32) !void {
var r: i32 = undefined;
const q: i32 = __divmodsi4(a, b, &r);
try testing.expect(q == expected_q and r == expected_r);
}
test "test_divmodsi4" {
for (cases__divmodsi4) |case| {
try test_one_divmodsi4(case[0], case[1], case[2], case[3]);
}
}
pub fn __udivmodsi4(a: u32, b: u32, rem: *u32) callconv(.C) u32 {
const d = __udivsi3(a, b);
rem.* = @bitCast(@as(i32, @bitCast(a)) -% (@as(i32, @bitCast(d)) * @as(i32, @bitCast(b))));
return d;
}
pub fn __divsi3(n: i32, d: i32) callconv(.C) i32 {
return div_i32(n, d);
}
fn __aeabi_idiv(n: i32, d: i32) callconv(.AAPCS) i32 {
return div_i32(n, d);
}
inline fn div_i32(n: i32, d: i32) i32 {
// Set aside the sign of the quotient.
const sign: u32 = @bitCast((n ^ d) >> 31);
// Take absolute value of a and b via abs(x) = (x^(x >> 31)) - (x >> 31).
const abs_n = (n ^ (n >> 31)) -% (n >> 31);
const abs_d = (d ^ (d >> 31)) -% (d >> 31);
// abs(a) / abs(b)
const res = @as(u32, @bitCast(abs_n)) / @as(u32, @bitCast(abs_d));
// Apply sign of quotient to result and return.
return @bitCast((res ^ sign) -% sign);
}
test "test_divsi3" {
const cases = [_][3]i32{
[_]i32{ 0, 1, 0 },
[_]i32{ 0, -1, 0 },
[_]i32{ 2, 1, 2 },
[_]i32{ 2, -1, -2 },
[_]i32{ -2, 1, -2 },
[_]i32{ -2, -1, 2 },
[_]i32{ @bitCast(@as(u32, 0x80000000)), 1, @bitCast(@as(u32, 0x80000000)) },
[_]i32{ @bitCast(@as(u32, 0x80000000)), -1, @bitCast(@as(u32, 0x80000000)) },
[_]i32{ @bitCast(@as(u32, 0x80000000)), -2, 0x40000000 },
[_]i32{ @bitCast(@as(u32, 0x80000000)), 2, @bitCast(@as(u32, 0xC0000000)) },
};
for (cases) |case| {
try test_one_divsi3(case[0], case[1], case[2]);
}
}
fn test_one_divsi3(a: i32, b: i32, expected_q: i32) !void {
const q: i32 = __divsi3(a, b);
try testing.expect(q == expected_q);
}
pub fn __udivsi3(n: u32, d: u32) callconv(.C) u32 {
return div_u32(n, d);
}
fn __aeabi_uidiv(n: u32, d: u32) callconv(.AAPCS) u32 {
return div_u32(n, d);
}
inline fn div_u32(n: u32, d: u32) u32 {
const n_uword_bits: c_uint = 32;
// special cases
if (d == 0) return 0; // ?!
if (n == 0) return 0;
var sr = @as(c_uint, @bitCast(@as(c_int, @clz(d)) - @as(c_int, @clz(n))));
// 0 <= sr <= n_uword_bits - 1 or sr large
if (sr > n_uword_bits - 1) {
// d > r
return 0;
}
if (sr == n_uword_bits - 1) {
// d == 1
return n;
}
sr += 1;
// 1 <= sr <= n_uword_bits - 1
// Not a special case
var q: u32 = n << @intCast(n_uword_bits - sr);
var r: u32 = n >> @intCast(sr);
var carry: u32 = 0;
while (sr > 0) : (sr -= 1) {
// r:q = ((r:q) << 1) | carry
r = (r << 1) | (q >> @intCast(n_uword_bits - 1));
q = (q << 1) | carry;
// carry = 0;
// if (r.all >= d.all)
// {
// r.all -= d.all;
// carry = 1;
// }
const s = @as(i32, @bitCast(d -% r -% 1)) >> @intCast(n_uword_bits - 1);
carry = @intCast(s & 1);
r -= d & @as(u32, @bitCast(s));
}
q = (q << 1) | carry;
return q;
}
test "test_udivsi3" {
const cases = [_][3]u32{
[_]u32{ 0x00000000, 0x00000001, 0x00000000 },
[_]u32{ 0x00000000, 0x00000002, 0x00000000 },
[_]u32{ 0x00000000, 0x00000003, 0x00000000 },
[_]u32{ 0x00000000, 0x00000010, 0x00000000 },
[_]u32{ 0x00000000, 0x078644FA, 0x00000000 },
[_]u32{ 0x00000000, 0x0747AE14, 0x00000000 },
[_]u32{ 0x00000000, 0x7FFFFFFF, 0x00000000 },
[_]u32{ 0x00000000, 0x80000000, 0x00000000 },
[_]u32{ 0x00000000, 0xFFFFFFFD, 0x00000000 },
[_]u32{ 0x00000000, 0xFFFFFFFE, 0x00000000 },
[_]u32{ 0x00000000, 0xFFFFFFFF, 0x00000000 },
[_]u32{ 0x00000001, 0x00000001, 0x00000001 },
[_]u32{ 0x00000001, 0x00000002, 0x00000000 },
[_]u32{ 0x00000001, 0x00000003, 0x00000000 },
[_]u32{ 0x00000001, 0x00000010, 0x00000000 },
[_]u32{ 0x00000001, 0x078644FA, 0x00000000 },
[_]u32{ 0x00000001, 0x0747AE14, 0x00000000 },
[_]u32{ 0x00000001, 0x7FFFFFFF, 0x00000000 },
[_]u32{ 0x00000001, 0x80000000, 0x00000000 },
[_]u32{ 0x00000001, 0xFFFFFFFD, 0x00000000 },
[_]u32{ 0x00000001, 0xFFFFFFFE, 0x00000000 },
[_]u32{ 0x00000001, 0xFFFFFFFF, 0x00000000 },
[_]u32{ 0x00000002, 0x00000001, 0x00000002 },
[_]u32{ 0x00000002, 0x00000002, 0x00000001 },
[_]u32{ 0x00000002, 0x00000003, 0x00000000 },
[_]u32{ 0x00000002, 0x00000010, 0x00000000 },
[_]u32{ 0x00000002, 0x078644FA, 0x00000000 },
[_]u32{ 0x00000002, 0x0747AE14, 0x00000000 },
[_]u32{ 0x00000002, 0x7FFFFFFF, 0x00000000 },
[_]u32{ 0x00000002, 0x80000000, 0x00000000 },
[_]u32{ 0x00000002, 0xFFFFFFFD, 0x00000000 },
[_]u32{ 0x00000002, 0xFFFFFFFE, 0x00000000 },
[_]u32{ 0x00000002, 0xFFFFFFFF, 0x00000000 },
[_]u32{ 0x00000003, 0x00000001, 0x00000003 },
[_]u32{ 0x00000003, 0x00000002, 0x00000001 },
[_]u32{ 0x00000003, 0x00000003, 0x00000001 },
[_]u32{ 0x00000003, 0x00000010, 0x00000000 },
[_]u32{ 0x00000003, 0x078644FA, 0x00000000 },
[_]u32{ 0x00000003, 0x0747AE14, 0x00000000 },
[_]u32{ 0x00000003, 0x7FFFFFFF, 0x00000000 },
[_]u32{ 0x00000003, 0x80000000, 0x00000000 },
[_]u32{ 0x00000003, 0xFFFFFFFD, 0x00000000 },
[_]u32{ 0x00000003, 0xFFFFFFFE, 0x00000000 },
[_]u32{ 0x00000003, 0xFFFFFFFF, 0x00000000 },
[_]u32{ 0x00000010, 0x00000001, 0x00000010 },
[_]u32{ 0x00000010, 0x00000002, 0x00000008 },
[_]u32{ 0x00000010, 0x00000003, 0x00000005 },
[_]u32{ 0x00000010, 0x00000010, 0x00000001 },
[_]u32{ 0x00000010, 0x078644FA, 0x00000000 },
[_]u32{ 0x00000010, 0x0747AE14, 0x00000000 },
[_]u32{ 0x00000010, 0x7FFFFFFF, 0x00000000 },
[_]u32{ 0x00000010, 0x80000000, 0x00000000 },
[_]u32{ 0x00000010, 0xFFFFFFFD, 0x00000000 },
[_]u32{ 0x00000010, 0xFFFFFFFE, 0x00000000 },
[_]u32{ 0x00000010, 0xFFFFFFFF, 0x00000000 },
[_]u32{ 0x078644FA, 0x00000001, 0x078644FA },
[_]u32{ 0x078644FA, 0x00000002, 0x03C3227D },
[_]u32{ 0x078644FA, 0x00000003, 0x028216FE },
[_]u32{ 0x078644FA, 0x00000010, 0x0078644F },
[_]u32{ 0x078644FA, 0x078644FA, 0x00000001 },
[_]u32{ 0x078644FA, 0x0747AE14, 0x00000001 },
[_]u32{ 0x078644FA, 0x7FFFFFFF, 0x00000000 },
[_]u32{ 0x078644FA, 0x80000000, 0x00000000 },
[_]u32{ 0x078644FA, 0xFFFFFFFD, 0x00000000 },
[_]u32{ 0x078644FA, 0xFFFFFFFE, 0x00000000 },
[_]u32{ 0x078644FA, 0xFFFFFFFF, 0x00000000 },
[_]u32{ 0x0747AE14, 0x00000001, 0x0747AE14 },
[_]u32{ 0x0747AE14, 0x00000002, 0x03A3D70A },
[_]u32{ 0x0747AE14, 0x00000003, 0x026D3A06 },
[_]u32{ 0x0747AE14, 0x00000010, 0x00747AE1 },
[_]u32{ 0x0747AE14, 0x078644FA, 0x00000000 },
[_]u32{ 0x0747AE14, 0x0747AE14, 0x00000001 },
[_]u32{ 0x0747AE14, 0x7FFFFFFF, 0x00000000 },
[_]u32{ 0x0747AE14, 0x80000000, 0x00000000 },
[_]u32{ 0x0747AE14, 0xFFFFFFFD, 0x00000000 },
[_]u32{ 0x0747AE14, 0xFFFFFFFE, 0x00000000 },
[_]u32{ 0x0747AE14, 0xFFFFFFFF, 0x00000000 },
[_]u32{ 0x7FFFFFFF, 0x00000001, 0x7FFFFFFF },
[_]u32{ 0x7FFFFFFF, 0x00000002, 0x3FFFFFFF },
[_]u32{ 0x7FFFFFFF, 0x00000003, 0x2AAAAAAA },
[_]u32{ 0x7FFFFFFF, 0x00000010, 0x07FFFFFF },
[_]u32{ 0x7FFFFFFF, 0x078644FA, 0x00000011 },
[_]u32{ 0x7FFFFFFF, 0x0747AE14, 0x00000011 },
[_]u32{ 0x7FFFFFFF, 0x7FFFFFFF, 0x00000001 },
[_]u32{ 0x7FFFFFFF, 0x80000000, 0x00000000 },
[_]u32{ 0x7FFFFFFF, 0xFFFFFFFD, 0x00000000 },
[_]u32{ 0x7FFFFFFF, 0xFFFFFFFE, 0x00000000 },
[_]u32{ 0x7FFFFFFF, 0xFFFFFFFF, 0x00000000 },
[_]u32{ 0x80000000, 0x00000001, 0x80000000 },
[_]u32{ 0x80000000, 0x00000002, 0x40000000 },
[_]u32{ 0x80000000, 0x00000003, 0x2AAAAAAA },
[_]u32{ 0x80000000, 0x00000010, 0x08000000 },
[_]u32{ 0x80000000, 0x078644FA, 0x00000011 },
[_]u32{ 0x80000000, 0x0747AE14, 0x00000011 },
[_]u32{ 0x80000000, 0x7FFFFFFF, 0x00000001 },
[_]u32{ 0x80000000, 0x80000000, 0x00000001 },
[_]u32{ 0x80000000, 0xFFFFFFFD, 0x00000000 },
[_]u32{ 0x80000000, 0xFFFFFFFE, 0x00000000 },
[_]u32{ 0x80000000, 0xFFFFFFFF, 0x00000000 },
[_]u32{ 0xFFFFFFFD, 0x00000001, 0xFFFFFFFD },
[_]u32{ 0xFFFFFFFD, 0x00000002, 0x7FFFFFFE },
[_]u32{ 0xFFFFFFFD, 0x00000003, 0x55555554 },
[_]u32{ 0xFFFFFFFD, 0x00000010, 0x0FFFFFFF },
[_]u32{ 0xFFFFFFFD, 0x078644FA, 0x00000022 },
[_]u32{ 0xFFFFFFFD, 0x0747AE14, 0x00000023 },
[_]u32{ 0xFFFFFFFD, 0x7FFFFFFF, 0x00000001 },
[_]u32{ 0xFFFFFFFD, 0x80000000, 0x00000001 },
[_]u32{ 0xFFFFFFFD, 0xFFFFFFFD, 0x00000001 },
[_]u32{ 0xFFFFFFFD, 0xFFFFFFFE, 0x00000000 },
[_]u32{ 0xFFFFFFFD, 0xFFFFFFFF, 0x00000000 },
[_]u32{ 0xFFFFFFFE, 0x00000001, 0xFFFFFFFE },
[_]u32{ 0xFFFFFFFE, 0x00000002, 0x7FFFFFFF },
[_]u32{ 0xFFFFFFFE, 0x00000003, 0x55555554 },
[_]u32{ 0xFFFFFFFE, 0x00000010, 0x0FFFFFFF },
[_]u32{ 0xFFFFFFFE, 0x078644FA, 0x00000022 },
[_]u32{ 0xFFFFFFFE, 0x0747AE14, 0x00000023 },
[_]u32{ 0xFFFFFFFE, 0x7FFFFFFF, 0x00000002 },
[_]u32{ 0xFFFFFFFE, 0x80000000, 0x00000001 },
[_]u32{ 0xFFFFFFFE, 0xFFFFFFFD, 0x00000001 },
[_]u32{ 0xFFFFFFFE, 0xFFFFFFFE, 0x00000001 },
[_]u32{ 0xFFFFFFFE, 0xFFFFFFFF, 0x00000000 },
[_]u32{ 0xFFFFFFFF, 0x00000001, 0xFFFFFFFF },
[_]u32{ 0xFFFFFFFF, 0x00000002, 0x7FFFFFFF },
[_]u32{ 0xFFFFFFFF, 0x00000003, 0x55555555 },
[_]u32{ 0xFFFFFFFF, 0x00000010, 0x0FFFFFFF },
[_]u32{ 0xFFFFFFFF, 0x078644FA, 0x00000022 },
[_]u32{ 0xFFFFFFFF, 0x0747AE14, 0x00000023 },
[_]u32{ 0xFFFFFFFF, 0x7FFFFFFF, 0x00000002 },
[_]u32{ 0xFFFFFFFF, 0x80000000, 0x00000001 },
[_]u32{ 0xFFFFFFFF, 0xFFFFFFFD, 0x00000001 },
[_]u32{ 0xFFFFFFFF, 0xFFFFFFFE, 0x00000001 },
[_]u32{ 0xFFFFFFFF, 0xFFFFFFFF, 0x00000001 },
};
for (cases) |case| {
try test_one_udivsi3(case[0], case[1], case[2]);
}
}
fn test_one_udivsi3(a: u32, b: u32, expected_q: u32) !void {
const q: u32 = __udivsi3(a, b);
try testing.expect(q == expected_q);
}
pub fn __modsi3(n: i32, d: i32) callconv(.C) i32 {
return n -% __divsi3(n, d) * d;
}
test "test_modsi3" {
const cases = [_][3]i32{
[_]i32{ 0, 1, 0 },
[_]i32{ 0, -1, 0 },
[_]i32{ 5, 3, 2 },
[_]i32{ 5, -3, 2 },
[_]i32{ -5, 3, -2 },
[_]i32{ -5, -3, -2 },
[_]i32{ @bitCast(@as(u32, @intCast(0x80000000))), 1, 0x0 },
[_]i32{ @bitCast(@as(u32, @intCast(0x80000000))), 2, 0x0 },
[_]i32{ @bitCast(@as(u32, @intCast(0x80000000))), -2, 0x0 },
[_]i32{ @bitCast(@as(u32, @intCast(0x80000000))), 3, -2 },
[_]i32{ @bitCast(@as(u32, @intCast(0x80000000))), -3, -2 },
};
for (cases) |case| {
try test_one_modsi3(case[0], case[1], case[2]);
}
}
fn test_one_modsi3(a: i32, b: i32, expected_r: i32) !void {
const r: i32 = __modsi3(a, b);
try testing.expect(r == expected_r);
}
pub fn __umodsi3(n: u32, d: u32) callconv(.C) u32 {
return n -% __udivsi3(n, d) * d;
}
test "test_umodsi3" {
const cases = [_][3]u32{
[_]u32{ 0x00000000, 0x00000001, 0x00000000 },
[_]u32{ 0x00000000, 0x00000002, 0x00000000 },
[_]u32{ 0x00000000, 0x00000003, 0x00000000 },
[_]u32{ 0x00000000, 0x00000010, 0x00000000 },
[_]u32{ 0x00000000, 0x078644FA, 0x00000000 },
[_]u32{ 0x00000000, 0x0747AE14, 0x00000000 },
[_]u32{ 0x00000000, 0x7FFFFFFF, 0x00000000 },
[_]u32{ 0x00000000, 0x80000000, 0x00000000 },
[_]u32{ 0x00000000, 0xFFFFFFFD, 0x00000000 },
[_]u32{ 0x00000000, 0xFFFFFFFE, 0x00000000 },
[_]u32{ 0x00000000, 0xFFFFFFFF, 0x00000000 },
[_]u32{ 0x00000001, 0x00000001, 0x00000000 },
[_]u32{ 0x00000001, 0x00000002, 0x00000001 },
[_]u32{ 0x00000001, 0x00000003, 0x00000001 },
[_]u32{ 0x00000001, 0x00000010, 0x00000001 },
[_]u32{ 0x00000001, 0x078644FA, 0x00000001 },
[_]u32{ 0x00000001, 0x0747AE14, 0x00000001 },
[_]u32{ 0x00000001, 0x7FFFFFFF, 0x00000001 },
[_]u32{ 0x00000001, 0x80000000, 0x00000001 },
[_]u32{ 0x00000001, 0xFFFFFFFD, 0x00000001 },
[_]u32{ 0x00000001, 0xFFFFFFFE, 0x00000001 },
[_]u32{ 0x00000001, 0xFFFFFFFF, 0x00000001 },
[_]u32{ 0x00000002, 0x00000001, 0x00000000 },
[_]u32{ 0x00000002, 0x00000002, 0x00000000 },
[_]u32{ 0x00000002, 0x00000003, 0x00000002 },
[_]u32{ 0x00000002, 0x00000010, 0x00000002 },
[_]u32{ 0x00000002, 0x078644FA, 0x00000002 },
[_]u32{ 0x00000002, 0x0747AE14, 0x00000002 },
[_]u32{ 0x00000002, 0x7FFFFFFF, 0x00000002 },
[_]u32{ 0x00000002, 0x80000000, 0x00000002 },
[_]u32{ 0x00000002, 0xFFFFFFFD, 0x00000002 },
[_]u32{ 0x00000002, 0xFFFFFFFE, 0x00000002 },
[_]u32{ 0x00000002, 0xFFFFFFFF, 0x00000002 },
[_]u32{ 0x00000003, 0x00000001, 0x00000000 },
[_]u32{ 0x00000003, 0x00000002, 0x00000001 },
[_]u32{ 0x00000003, 0x00000003, 0x00000000 },
[_]u32{ 0x00000003, 0x00000010, 0x00000003 },
[_]u32{ 0x00000003, 0x078644FA, 0x00000003 },
[_]u32{ 0x00000003, 0x0747AE14, 0x00000003 },
[_]u32{ 0x00000003, 0x7FFFFFFF, 0x00000003 },
[_]u32{ 0x00000003, 0x80000000, 0x00000003 },
[_]u32{ 0x00000003, 0xFFFFFFFD, 0x00000003 },
[_]u32{ 0x00000003, 0xFFFFFFFE, 0x00000003 },
[_]u32{ 0x00000003, 0xFFFFFFFF, 0x00000003 },
[_]u32{ 0x00000010, 0x00000001, 0x00000000 },
[_]u32{ 0x00000010, 0x00000002, 0x00000000 },
[_]u32{ 0x00000010, 0x00000003, 0x00000001 },
[_]u32{ 0x00000010, 0x00000010, 0x00000000 },
[_]u32{ 0x00000010, 0x078644FA, 0x00000010 },
[_]u32{ 0x00000010, 0x0747AE14, 0x00000010 },
[_]u32{ 0x00000010, 0x7FFFFFFF, 0x00000010 },
[_]u32{ 0x00000010, 0x80000000, 0x00000010 },
[_]u32{ 0x00000010, 0xFFFFFFFD, 0x00000010 },
[_]u32{ 0x00000010, 0xFFFFFFFE, 0x00000010 },
[_]u32{ 0x00000010, 0xFFFFFFFF, 0x00000010 },
[_]u32{ 0x078644FA, 0x00000001, 0x00000000 },
[_]u32{ 0x078644FA, 0x00000002, 0x00000000 },
[_]u32{ 0x078644FA, 0x00000003, 0x00000000 },
[_]u32{ 0x078644FA, 0x00000010, 0x0000000A },
[_]u32{ 0x078644FA, 0x078644FA, 0x00000000 },
[_]u32{ 0x078644FA, 0x0747AE14, 0x003E96E6 },
[_]u32{ 0x078644FA, 0x7FFFFFFF, 0x078644FA },
[_]u32{ 0x078644FA, 0x80000000, 0x078644FA },
[_]u32{ 0x078644FA, 0xFFFFFFFD, 0x078644FA },
[_]u32{ 0x078644FA, 0xFFFFFFFE, 0x078644FA },
[_]u32{ 0x078644FA, 0xFFFFFFFF, 0x078644FA },
[_]u32{ 0x0747AE14, 0x00000001, 0x00000000 },
[_]u32{ 0x0747AE14, 0x00000002, 0x00000000 },
[_]u32{ 0x0747AE14, 0x00000003, 0x00000002 },
[_]u32{ 0x0747AE14, 0x00000010, 0x00000004 },
[_]u32{ 0x0747AE14, 0x078644FA, 0x0747AE14 },
[_]u32{ 0x0747AE14, 0x0747AE14, 0x00000000 },
[_]u32{ 0x0747AE14, 0x7FFFFFFF, 0x0747AE14 },
[_]u32{ 0x0747AE14, 0x80000000, 0x0747AE14 },
[_]u32{ 0x0747AE14, 0xFFFFFFFD, 0x0747AE14 },
[_]u32{ 0x0747AE14, 0xFFFFFFFE, 0x0747AE14 },
[_]u32{ 0x0747AE14, 0xFFFFFFFF, 0x0747AE14 },
[_]u32{ 0x7FFFFFFF, 0x00000001, 0x00000000 },
[_]u32{ 0x7FFFFFFF, 0x00000002, 0x00000001 },
[_]u32{ 0x7FFFFFFF, 0x00000003, 0x00000001 },
[_]u32{ 0x7FFFFFFF, 0x00000010, 0x0000000F },
[_]u32{ 0x7FFFFFFF, 0x078644FA, 0x00156B65 },
[_]u32{ 0x7FFFFFFF, 0x0747AE14, 0x043D70AB },
[_]u32{ 0x7FFFFFFF, 0x7FFFFFFF, 0x00000000 },
[_]u32{ 0x7FFFFFFF, 0x80000000, 0x7FFFFFFF },
[_]u32{ 0x7FFFFFFF, 0xFFFFFFFD, 0x7FFFFFFF },
[_]u32{ 0x7FFFFFFF, 0xFFFFFFFE, 0x7FFFFFFF },
[_]u32{ 0x7FFFFFFF, 0xFFFFFFFF, 0x7FFFFFFF },
[_]u32{ 0x80000000, 0x00000001, 0x00000000 },
[_]u32{ 0x80000000, 0x00000002, 0x00000000 },
[_]u32{ 0x80000000, 0x00000003, 0x00000002 },
[_]u32{ 0x80000000, 0x00000010, 0x00000000 },
[_]u32{ 0x80000000, 0x078644FA, 0x00156B66 },
[_]u32{ 0x80000000, 0x0747AE14, 0x043D70AC },
[_]u32{ 0x80000000, 0x7FFFFFFF, 0x00000001 },
[_]u32{ 0x80000000, 0x80000000, 0x00000000 },
[_]u32{ 0x80000000, 0xFFFFFFFD, 0x80000000 },
[_]u32{ 0x80000000, 0xFFFFFFFE, 0x80000000 },
[_]u32{ 0x80000000, 0xFFFFFFFF, 0x80000000 },
[_]u32{ 0xFFFFFFFD, 0x00000001, 0x00000000 },
[_]u32{ 0xFFFFFFFD, 0x00000002, 0x00000001 },
[_]u32{ 0xFFFFFFFD, 0x00000003, 0x00000001 },
[_]u32{ 0xFFFFFFFD, 0x00000010, 0x0000000D },
[_]u32{ 0xFFFFFFFD, 0x078644FA, 0x002AD6C9 },
[_]u32{ 0xFFFFFFFD, 0x0747AE14, 0x01333341 },
[_]u32{ 0xFFFFFFFD, 0x7FFFFFFF, 0x7FFFFFFE },
[_]u32{ 0xFFFFFFFD, 0x80000000, 0x7FFFFFFD },
[_]u32{ 0xFFFFFFFD, 0xFFFFFFFD, 0x00000000 },
[_]u32{ 0xFFFFFFFD, 0xFFFFFFFE, 0xFFFFFFFD },
[_]u32{ 0xFFFFFFFD, 0xFFFFFFFF, 0xFFFFFFFD },
[_]u32{ 0xFFFFFFFE, 0x00000001, 0x00000000 },
[_]u32{ 0xFFFFFFFE, 0x00000002, 0x00000000 },
[_]u32{ 0xFFFFFFFE, 0x00000003, 0x00000002 },
[_]u32{ 0xFFFFFFFE, 0x00000010, 0x0000000E },
[_]u32{ 0xFFFFFFFE, 0x078644FA, 0x002AD6CA },
[_]u32{ 0xFFFFFFFE, 0x0747AE14, 0x01333342 },
[_]u32{ 0xFFFFFFFE, 0x7FFFFFFF, 0x00000000 },
[_]u32{ 0xFFFFFFFE, 0x80000000, 0x7FFFFFFE },
[_]u32{ 0xFFFFFFFE, 0xFFFFFFFD, 0x00000001 },
[_]u32{ 0xFFFFFFFE, 0xFFFFFFFE, 0x00000000 },
[_]u32{ 0xFFFFFFFE, 0xFFFFFFFF, 0xFFFFFFFE },
[_]u32{ 0xFFFFFFFF, 0x00000001, 0x00000000 },
[_]u32{ 0xFFFFFFFF, 0x00000002, 0x00000001 },
[_]u32{ 0xFFFFFFFF, 0x00000003, 0x00000000 },
[_]u32{ 0xFFFFFFFF, 0x00000010, 0x0000000F },
[_]u32{ 0xFFFFFFFF, 0x078644FA, 0x002AD6CB },
[_]u32{ 0xFFFFFFFF, 0x0747AE14, 0x01333343 },
[_]u32{ 0xFFFFFFFF, 0x7FFFFFFF, 0x00000001 },
[_]u32{ 0xFFFFFFFF, 0x80000000, 0x7FFFFFFF },
[_]u32{ 0xFFFFFFFF, 0xFFFFFFFD, 0x00000002 },
[_]u32{ 0xFFFFFFFF, 0xFFFFFFFE, 0x00000001 },
[_]u32{ 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000 },
};
for (cases) |case| {
try test_one_umodsi3(case[0], case[1], case[2]);
}
}
fn test_one_umodsi3(a: u32, b: u32, expected_r: u32) !void {
const r: u32 = __umodsi3(a, b);
try testing.expect(r == expected_r);
}
Reference in New Issue View Git Blame Copy Permalink