From 2be066d057946eae592307f8f16679626b85b31d Mon Sep 17 00:00:00 2001 From: LemonBoy Date: Wed, 8 May 2019 22:38:16 +0200 Subject: [PATCH] compiler-rt: Add __floatdidf Add AEABI builtin __aeabi_l2d --- CMakeLists.txt | 1 + std/special/compiler_rt.zig | 3 ++ std/special/compiler_rt/floatdidf.zig | 22 +++++++++ std/special/compiler_rt/floatdidf_test.zig | 53 ++++++++++++++++++++++ 4 files changed, 79 insertions(+) create mode 100644 std/special/compiler_rt/floatdidf.zig create mode 100644 std/special/compiler_rt/floatdidf_test.zig diff --git a/CMakeLists.txt b/CMakeLists.txt index 8ec86d7e6..991dc8519 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -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" diff --git a/std/special/compiler_rt.zig b/std/special/compiler_rt.zig index e78d58f00..8784aa2b1 100644 --- a/std/special/compiler_rt.zig +++ b/std/special/compiler_rt.zig @@ -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); diff --git a/std/special/compiler_rt/floatdidf.zig b/std/special/compiler_rt/floatdidf.zig new file mode 100644 index 000000000..161013641 --- /dev/null +++ b/std/special/compiler_rt/floatdidf.zig @@ -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"); +} diff --git a/std/special/compiler_rt/floatdidf_test.zig b/std/special/compiler_rt/floatdidf_test.zig new file mode 100644 index 000000000..c85418380 --- /dev/null +++ b/std/special/compiler_rt/floatdidf_test.zig @@ -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); +}