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compiler-rt: Add __floatdidf 

Add AEABI builtin __aeabi_l2d
master
LemonBoy 2019-05-08 22:38:16 +02:00
parent d4434dfb67
commit 2be066d057
4 changed files with 79 additions and 0 deletions
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1
CMakeLists.txt
View File

@ -677,6 +677,7 @@ set(ZIG_STD_FILES
"special/compiler_rt/fixunstfdi.zig"
"special/compiler_rt/fixunstfsi.zig"
"special/compiler_rt/fixunstfti.zig"
"special/compiler_rt/floatdidf.zig"
"special/compiler_rt/floatsiXf.zig"
"special/compiler_rt/floatunsidf.zig"
"special/compiler_rt/floattidf.zig"

3
std/special/compiler_rt.zig
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@ -66,6 +66,7 @@ comptime {
@export("__floatsidf", @import("compiler_rt/floatsiXf.zig").__floatsidf, linkage);
@export("__floatsisf", @import("compiler_rt/floatsiXf.zig").__floatsisf, linkage);
@export("__floatdidf", @import("compiler_rt/floatdidf.zig").__floatdidf, linkage);
@export("__floatunsidf", @import("compiler_rt/floatunsidf.zig").__floatunsidf, linkage);
@export("__floatundidf", @import("compiler_rt/floatundidf.zig").__floatundidf, linkage);
@ -161,8 +162,10 @@ comptime {
@export("__aeabi_memcmp8", __aeabi_memcmp, linkage);
@export("__aeabi_i2d", @import("compiler_rt/floatsiXf.zig").__floatsidf, linkage);
@export("__aeabi_l2d", @import("compiler_rt/floatdidf.zig").__floatdidf, linkage);
@export("__aeabi_ui2d", @import("compiler_rt/floatunsidf.zig").__floatunsidf, linkage);
@export("__aeabi_ul2d", @import("compiler_rt/floatundidf.zig").__floatundidf, linkage);
@export("__aeabi_fneg", @import("compiler_rt/negXf2.zig").__negsf2, linkage);
@export("__aeabi_dneg", @import("compiler_rt/negXf2.zig").__negdf2, linkage);

22
std/special/compiler_rt/floatdidf.zig Normal file
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@ -0,0 +1,22 @@
const builtin = @import("builtin");
const std = @import("std");
const twop52: f64 = 0x1.0p52;
const twop32: f64 = 0x1.0p32;
pub extern fn __floatdidf(a: i64) f64 {
@setRuntimeSafety(builtin.is_test);
if (a == 0) return 0;
var low = @bitCast(i64, twop52);
const high = @intToFloat(f64, @truncate(i32, a >> 32)) * twop32;
low |= @bitCast(i64, a & 0xFFFFFFFF);
return (high - twop52) + @bitCast(f64, low);
}
test "import floatdidf" {
_ = @import("floatdidf_test.zig");
}

53
std/special/compiler_rt/floatdidf_test.zig Normal file
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@ -0,0 +1,53 @@
const __floatdidf = @import("floatdidf.zig").__floatdidf;
const testing = @import("std").testing;
fn test__floatdidf(a: i64, expected: f64) void {
const r = __floatdidf(a);
testing.expect(r == expected);
}
test "floatdidf" {
test__floatdidf(0, 0.0);
test__floatdidf(1, 1.0);
test__floatdidf(2, 2.0);
test__floatdidf(20, 20.0);
test__floatdidf(-1, -1.0);
test__floatdidf(-2, -2.0);
test__floatdidf(-20, -20.0);
test__floatdidf(0x7FFFFF8000000000, 0x1.FFFFFEp+62);
test__floatdidf(0x7FFFFFFFFFFFF800, 0x1.FFFFFFFFFFFFEp+62);
test__floatdidf(0x7FFFFF0000000000, 0x1.FFFFFCp+62);
test__floatdidf(0x7FFFFFFFFFFFF000, 0x1.FFFFFFFFFFFFCp+62);
test__floatdidf(@bitCast(i64, @intCast(u64, 0x8000008000000000)), -0x1.FFFFFEp+62);
test__floatdidf(@bitCast(i64, @intCast(u64, 0x8000000000000800)), -0x1.FFFFFFFFFFFFEp+62);
test__floatdidf(@bitCast(i64, @intCast(u64, 0x8000010000000000)), -0x1.FFFFFCp+62);
test__floatdidf(@bitCast(i64, @intCast(u64, 0x8000000000001000)), -0x1.FFFFFFFFFFFFCp+62);
test__floatdidf(@bitCast(i64, @intCast(u64, 0x8000000000000000)), -0x1.000000p+63);
test__floatdidf(@bitCast(i64, @intCast(u64, 0x8000000000000001)), -0x1.000000p+63);
test__floatdidf(0x0007FB72E8000000, 0x1.FEDCBAp+50);
test__floatdidf(0x0007FB72EA000000, 0x1.FEDCBA8p+50);
test__floatdidf(0x0007FB72EB000000, 0x1.FEDCBACp+50);
test__floatdidf(0x0007FB72EBFFFFFF, 0x1.FEDCBAFFFFFFCp+50);
test__floatdidf(0x0007FB72EC000000, 0x1.FEDCBBp+50);
test__floatdidf(0x0007FB72E8000001, 0x1.FEDCBA0000004p+50);
test__floatdidf(0x0007FB72E6000000, 0x1.FEDCB98p+50);
test__floatdidf(0x0007FB72E7000000, 0x1.FEDCB9Cp+50);
test__floatdidf(0x0007FB72E7FFFFFF, 0x1.FEDCB9FFFFFFCp+50);
test__floatdidf(0x0007FB72E4000001, 0x1.FEDCB90000004p+50);
test__floatdidf(0x0007FB72E4000000, 0x1.FEDCB9p+50);
test__floatdidf(0x023479FD0E092DC0, 0x1.1A3CFE870496Ep+57);
test__floatdidf(0x023479FD0E092DA1, 0x1.1A3CFE870496Dp+57);
test__floatdidf(0x023479FD0E092DB0, 0x1.1A3CFE870496Ep+57);
test__floatdidf(0x023479FD0E092DB8, 0x1.1A3CFE870496Ep+57);
test__floatdidf(0x023479FD0E092DB6, 0x1.1A3CFE870496Ep+57);
test__floatdidf(0x023479FD0E092DBF, 0x1.1A3CFE870496Ep+57);
test__floatdidf(0x023479FD0E092DC1, 0x1.1A3CFE870496Ep+57);
test__floatdidf(0x023479FD0E092DC7, 0x1.1A3CFE870496Ep+57);
test__floatdidf(0x023479FD0E092DC8, 0x1.1A3CFE870496Ep+57);
test__floatdidf(0x023479FD0E092DCF, 0x1.1A3CFE870496Ep+57);
test__floatdidf(0x023479FD0E092DD0, 0x1.1A3CFE870496Ep+57);
test__floatdidf(0x023479FD0E092DD1, 0x1.1A3CFE870496Fp+57);
test__floatdidf(0x023479FD0E092DD8, 0x1.1A3CFE870496Fp+57);
test__floatdidf(0x023479FD0E092DDF, 0x1.1A3CFE870496Fp+57);
test__floatdidf(0x023479FD0E092DE0, 0x1.1A3CFE870496Fp+57);
}