authorgravatar for thatlemon@gmail.comLemonBoy <thatlemon@gmail.com> 2019-05-08 22:38:16+02:00
committergravatar for thatlemon@gmail.comLemonBoy <thatlemon@gmail.com> 2019-05-08 23:57:09+02:00
log2be066d057946eae592307f8f16679626b85b31d
tree9525a0de629ac072a6bb8ec2eeaecd1e8f4001a2
parentd4434dfb6744b82429060b4118ab71c55dff2141

compiler-rt: Add __floatdidf

Add AEABI builtin __aeabi_l2d

4 files changed, 79 insertions(+), 0 deletions(-)

CMakeLists.txt+1
......@@ -677,6 +677,7 @@ set(ZIG_STD_FILES
677677 "special/compiler_rt/fixunstfdi.zig"
678678 "special/compiler_rt/fixunstfsi.zig"
679679 "special/compiler_rt/fixunstfti.zig"
680 "special/compiler_rt/floatdidf.zig"
680681 "special/compiler_rt/floatsiXf.zig"
681682 "special/compiler_rt/floatunsidf.zig"
682683 "special/compiler_rt/floattidf.zig"
std/special/compiler_rt.zig+3
......@@ -66,6 +66,7 @@ comptime {
6666
6767 @export("__floatsidf", @import("compiler_rt/floatsiXf.zig").__floatsidf, linkage);
6868 @export("__floatsisf", @import("compiler_rt/floatsiXf.zig").__floatsisf, linkage);
69 @export("__floatdidf", @import("compiler_rt/floatdidf.zig").__floatdidf, linkage);
6970 @export("__floatunsidf", @import("compiler_rt/floatunsidf.zig").__floatunsidf, linkage);
7071 @export("__floatundidf", @import("compiler_rt/floatundidf.zig").__floatundidf, linkage);
7172
......@@ -161,8 +162,10 @@ comptime {
161162 @export("__aeabi_memcmp8", __aeabi_memcmp, linkage);
162163
163164 @export("__aeabi_i2d", @import("compiler_rt/floatsiXf.zig").__floatsidf, linkage);
165 @export("__aeabi_l2d", @import("compiler_rt/floatdidf.zig").__floatdidf, linkage);
164166 @export("__aeabi_ui2d", @import("compiler_rt/floatunsidf.zig").__floatunsidf, linkage);
165167 @export("__aeabi_ul2d", @import("compiler_rt/floatundidf.zig").__floatundidf, linkage);
168
166169 @export("__aeabi_fneg", @import("compiler_rt/negXf2.zig").__negsf2, linkage);
167170 @export("__aeabi_dneg", @import("compiler_rt/negXf2.zig").__negdf2, linkage);
168171
std/special/compiler_rt/floatdidf.zig created+22
......@@ -0,0 +1,22 @@
1const builtin = @import("builtin");
2const std = @import("std");
3
4const twop52: f64 = 0x1.0p52;
5const twop32: f64 = 0x1.0p32;
6
7pub extern fn __floatdidf(a: i64) f64 {
8 @setRuntimeSafety(builtin.is_test);
9
10 if (a == 0) return 0;
11
12 var low = @bitCast(i64, twop52);
13 const high = @intToFloat(f64, @truncate(i32, a >> 32)) * twop32;
14
15 low |= @bitCast(i64, a & 0xFFFFFFFF);
16
17 return (high - twop52) + @bitCast(f64, low);
18}
19
20test "import floatdidf" {
21 _ = @import("floatdidf_test.zig");
22}
std/special/compiler_rt/floatdidf_test.zig created+53
......@@ -0,0 +1,53 @@
1const __floatdidf = @import("floatdidf.zig").__floatdidf;
2const testing = @import("std").testing;
3
4fn test__floatdidf(a: i64, expected: f64) void {
5 const r = __floatdidf(a);
6 testing.expect(r == expected);
7}
8
9test "floatdidf" {
10 test__floatdidf(0, 0.0);
11 test__floatdidf(1, 1.0);
12 test__floatdidf(2, 2.0);
13 test__floatdidf(20, 20.0);
14 test__floatdidf(-1, -1.0);
15 test__floatdidf(-2, -2.0);
16 test__floatdidf(-20, -20.0);
17 test__floatdidf(0x7FFFFF8000000000, 0x1.FFFFFEp+62);
18 test__floatdidf(0x7FFFFFFFFFFFF800, 0x1.FFFFFFFFFFFFEp+62);
19 test__floatdidf(0x7FFFFF0000000000, 0x1.FFFFFCp+62);
20 test__floatdidf(0x7FFFFFFFFFFFF000, 0x1.FFFFFFFFFFFFCp+62);
21 test__floatdidf(@bitCast(i64, @intCast(u64, 0x8000008000000000)), -0x1.FFFFFEp+62);
22 test__floatdidf(@bitCast(i64, @intCast(u64, 0x8000000000000800)), -0x1.FFFFFFFFFFFFEp+62);
23 test__floatdidf(@bitCast(i64, @intCast(u64, 0x8000010000000000)), -0x1.FFFFFCp+62);
24 test__floatdidf(@bitCast(i64, @intCast(u64, 0x8000000000001000)), -0x1.FFFFFFFFFFFFCp+62);
25 test__floatdidf(@bitCast(i64, @intCast(u64, 0x8000000000000000)), -0x1.000000p+63);
26 test__floatdidf(@bitCast(i64, @intCast(u64, 0x8000000000000001)), -0x1.000000p+63);
27 test__floatdidf(0x0007FB72E8000000, 0x1.FEDCBAp+50);
28 test__floatdidf(0x0007FB72EA000000, 0x1.FEDCBA8p+50);
29 test__floatdidf(0x0007FB72EB000000, 0x1.FEDCBACp+50);
30 test__floatdidf(0x0007FB72EBFFFFFF, 0x1.FEDCBAFFFFFFCp+50);
31 test__floatdidf(0x0007FB72EC000000, 0x1.FEDCBBp+50);
32 test__floatdidf(0x0007FB72E8000001, 0x1.FEDCBA0000004p+50);
33 test__floatdidf(0x0007FB72E6000000, 0x1.FEDCB98p+50);
34 test__floatdidf(0x0007FB72E7000000, 0x1.FEDCB9Cp+50);
35 test__floatdidf(0x0007FB72E7FFFFFF, 0x1.FEDCB9FFFFFFCp+50);
36 test__floatdidf(0x0007FB72E4000001, 0x1.FEDCB90000004p+50);
37 test__floatdidf(0x0007FB72E4000000, 0x1.FEDCB9p+50);
38 test__floatdidf(0x023479FD0E092DC0, 0x1.1A3CFE870496Ep+57);
39 test__floatdidf(0x023479FD0E092DA1, 0x1.1A3CFE870496Dp+57);
40 test__floatdidf(0x023479FD0E092DB0, 0x1.1A3CFE870496Ep+57);
41 test__floatdidf(0x023479FD0E092DB8, 0x1.1A3CFE870496Ep+57);
42 test__floatdidf(0x023479FD0E092DB6, 0x1.1A3CFE870496Ep+57);
43 test__floatdidf(0x023479FD0E092DBF, 0x1.1A3CFE870496Ep+57);
44 test__floatdidf(0x023479FD0E092DC1, 0x1.1A3CFE870496Ep+57);
45 test__floatdidf(0x023479FD0E092DC7, 0x1.1A3CFE870496Ep+57);
46 test__floatdidf(0x023479FD0E092DC8, 0x1.1A3CFE870496Ep+57);
47 test__floatdidf(0x023479FD0E092DCF, 0x1.1A3CFE870496Ep+57);
48 test__floatdidf(0x023479FD0E092DD0, 0x1.1A3CFE870496Ep+57);
49 test__floatdidf(0x023479FD0E092DD1, 0x1.1A3CFE870496Fp+57);
50 test__floatdidf(0x023479FD0E092DD8, 0x1.1A3CFE870496Fp+57);
51 test__floatdidf(0x023479FD0E092DDF, 0x1.1A3CFE870496Fp+57);
52 test__floatdidf(0x023479FD0E092DE0, 0x1.1A3CFE870496Fp+57);
53}