compiler_rt: Add floattitf/floattidf/floattisf

master
Marc Tiehuis 2018-06-30 19:57:17 +12:00
parent 53fef94b9f
commit 814a34f263
7 changed files with 451 additions and 0 deletions

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const builtin = @import("builtin");
const is_test = builtin.is_test;
const DBL_MANT_DIG = 53;
pub extern fn __floattidf(arg: i128) f64 {
@setRuntimeSafety(is_test);
if (arg == 0)
return 0.0;
var ai = arg;
const N: u32 = 128;
const si = ai >> @intCast(u7, (N - 1));
ai = ((ai ^ si) -% si);
var a = @bitCast(u128, ai);
const sd = @bitCast(i32, N - @clz(a)); // number of significant digits
var e: i32 = sd - 1; // exponent
if (sd > DBL_MANT_DIG) {
// start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx
// finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR
// 12345678901234567890123456
// 1 = msb 1 bit
// P = bit DBL_MANT_DIG-1 bits to the right of 1
// Q = bit DBL_MANT_DIG bits to the right of 1
// R = "or" of all bits to the right of Q
switch (sd) {
DBL_MANT_DIG + 1 => {
a <<= 1;
},
DBL_MANT_DIG + 2 => {},
else => {
const shift1_amt = @intCast(i32, sd - (DBL_MANT_DIG + 2));
const shift1_amt_u7 = @intCast(u7, shift1_amt);
const shift2_amt = @intCast(i32, N + (DBL_MANT_DIG + 2)) - sd;
const shift2_amt_u7 = @intCast(u7, shift2_amt);
a = (a >> shift1_amt_u7) | @boolToInt((a & (@intCast(u128, @maxValue(u128)) >> shift2_amt_u7)) != 0);
},
}
// finish
a |= @boolToInt((a & 4) != 0); // Or P into R
a +%= 1; // round - this step may add a significant bit
a >>= 2; // dump Q and R
// a is now rounded to DBL_MANT_DIG or DBL_MANT_DIG+1 bits
if ((a & (u128(1) << DBL_MANT_DIG)) != 0) {
a >>= 1;
e +%= 1;
}
// a is now rounded to DBL_MANT_DIG bits
} else {
a <<= @intCast(u7, DBL_MANT_DIG - sd);
// a is now rounded to DBL_MANT_DIG bits
}
const s = @bitCast(u128, arg) >> (128 - 32);
const high: u64 = (@intCast(u64, s) & 0x80000000) | // sign
(@intCast(u32, (e + 1023)) << 20) | // exponent
(@truncate(u32, a >> 32) & 0x000fffff); // mantissa-high
const low: u64 = @truncate(u32, a); // mantissa-low
return @bitCast(f64, low | (high << 32));
}
test "import floattidf" {
_ = @import("floattidf_test.zig");
}

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const __floattidf = @import("floattidf.zig").__floattidf;
const assert = @import("std").debug.assert;
fn test__floattidf(a: i128, expected: f64) void {
const x = __floattidf(a);
assert(x == expected);
}
test "floattidf" {
test__floattidf(0, 0.0);
test__floattidf(1, 1.0);
test__floattidf(2, 2.0);
test__floattidf(20, 20.0);
test__floattidf(-1, -1.0);
test__floattidf(-2, -2.0);
test__floattidf(-20, -20.0);
test__floattidf(0x7FFFFF8000000000, 0x1.FFFFFEp+62);
test__floattidf(0x7FFFFFFFFFFFF800, 0x1.FFFFFFFFFFFFEp+62);
test__floattidf(0x7FFFFF0000000000, 0x1.FFFFFCp+62);
test__floattidf(0x7FFFFFFFFFFFF000, 0x1.FFFFFFFFFFFFCp+62);
test__floattidf(make_ti(0x8000008000000000, 0), -0x1.FFFFFEp+126);
test__floattidf(make_ti(0x8000000000000800, 0), -0x1.FFFFFFFFFFFFEp+126);
test__floattidf(make_ti(0x8000010000000000, 0), -0x1.FFFFFCp+126);
test__floattidf(make_ti(0x8000000000001000, 0), -0x1.FFFFFFFFFFFFCp+126);
test__floattidf(make_ti(0x8000000000000000, 0), -0x1.000000p+127);
test__floattidf(make_ti(0x8000000000000001, 0), -0x1.000000p+127);
test__floattidf(0x0007FB72E8000000, 0x1.FEDCBAp+50);
test__floattidf(0x0007FB72EA000000, 0x1.FEDCBA8p+50);
test__floattidf(0x0007FB72EB000000, 0x1.FEDCBACp+50);
test__floattidf(0x0007FB72EBFFFFFF, 0x1.FEDCBAFFFFFFCp+50);
test__floattidf(0x0007FB72EC000000, 0x1.FEDCBBp+50);
test__floattidf(0x0007FB72E8000001, 0x1.FEDCBA0000004p+50);
test__floattidf(0x0007FB72E6000000, 0x1.FEDCB98p+50);
test__floattidf(0x0007FB72E7000000, 0x1.FEDCB9Cp+50);
test__floattidf(0x0007FB72E7FFFFFF, 0x1.FEDCB9FFFFFFCp+50);
test__floattidf(0x0007FB72E4000001, 0x1.FEDCB90000004p+50);
test__floattidf(0x0007FB72E4000000, 0x1.FEDCB9p+50);
test__floattidf(0x023479FD0E092DC0, 0x1.1A3CFE870496Ep+57);
test__floattidf(0x023479FD0E092DA1, 0x1.1A3CFE870496Dp+57);
test__floattidf(0x023479FD0E092DB0, 0x1.1A3CFE870496Ep+57);
test__floattidf(0x023479FD0E092DB8, 0x1.1A3CFE870496Ep+57);
test__floattidf(0x023479FD0E092DB6, 0x1.1A3CFE870496Ep+57);
test__floattidf(0x023479FD0E092DBF, 0x1.1A3CFE870496Ep+57);
test__floattidf(0x023479FD0E092DC1, 0x1.1A3CFE870496Ep+57);
test__floattidf(0x023479FD0E092DC7, 0x1.1A3CFE870496Ep+57);
test__floattidf(0x023479FD0E092DC8, 0x1.1A3CFE870496Ep+57);
test__floattidf(0x023479FD0E092DCF, 0x1.1A3CFE870496Ep+57);
test__floattidf(0x023479FD0E092DD0, 0x1.1A3CFE870496Ep+57);
test__floattidf(0x023479FD0E092DD1, 0x1.1A3CFE870496Fp+57);
test__floattidf(0x023479FD0E092DD8, 0x1.1A3CFE870496Fp+57);
test__floattidf(0x023479FD0E092DDF, 0x1.1A3CFE870496Fp+57);
test__floattidf(0x023479FD0E092DE0, 0x1.1A3CFE870496Fp+57);
test__floattidf(make_ti(0x023479FD0E092DC0, 0), 0x1.1A3CFE870496Ep+121);
test__floattidf(make_ti(0x023479FD0E092DA1, 1), 0x1.1A3CFE870496Dp+121);
test__floattidf(make_ti(0x023479FD0E092DB0, 2), 0x1.1A3CFE870496Ep+121);
test__floattidf(make_ti(0x023479FD0E092DB8, 3), 0x1.1A3CFE870496Ep+121);
test__floattidf(make_ti(0x023479FD0E092DB6, 4), 0x1.1A3CFE870496Ep+121);
test__floattidf(make_ti(0x023479FD0E092DBF, 5), 0x1.1A3CFE870496Ep+121);
test__floattidf(make_ti(0x023479FD0E092DC1, 6), 0x1.1A3CFE870496Ep+121);
test__floattidf(make_ti(0x023479FD0E092DC7, 7), 0x1.1A3CFE870496Ep+121);
test__floattidf(make_ti(0x023479FD0E092DC8, 8), 0x1.1A3CFE870496Ep+121);
test__floattidf(make_ti(0x023479FD0E092DCF, 9), 0x1.1A3CFE870496Ep+121);
test__floattidf(make_ti(0x023479FD0E092DD0, 0), 0x1.1A3CFE870496Ep+121);
test__floattidf(make_ti(0x023479FD0E092DD1, 11), 0x1.1A3CFE870496Fp+121);
test__floattidf(make_ti(0x023479FD0E092DD8, 12), 0x1.1A3CFE870496Fp+121);
test__floattidf(make_ti(0x023479FD0E092DDF, 13), 0x1.1A3CFE870496Fp+121);
test__floattidf(make_ti(0x023479FD0E092DE0, 14), 0x1.1A3CFE870496Fp+121);
}
fn make_ti(high: u64, low: u64) i128 {
var result: u128 = high;
result <<= 64;
result |= low;
return @bitCast(i128, result);
}

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const builtin = @import("builtin");
const is_test = builtin.is_test;
const FLT_MANT_DIG = 24;
pub extern fn __floattisf(arg: i128) f32 {
@setRuntimeSafety(is_test);
if (arg == 0)
return 0.0;
var ai = arg;
const N: u32 = 128;
const si = ai >> @intCast(u7, (N - 1));
ai = ((ai ^ si) -% si);
var a = @bitCast(u128, ai);
const sd = @bitCast(i32, N - @clz(a)); // number of significant digits
var e: i32 = sd - 1; // exponent
if (sd > FLT_MANT_DIG) {
// start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx
// finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR
// 12345678901234567890123456
// 1 = msb 1 bit
// P = bit FLT_MANT_DIG-1 bits to the right of 1
// Q = bit FLT_MANT_DIG bits to the right of 1
// R = "or" of all bits to the right of Q
switch (sd) {
FLT_MANT_DIG + 1 => {
a <<= 1;
},
FLT_MANT_DIG + 2 => {},
else => {
const shift1_amt = @intCast(i32, sd - (FLT_MANT_DIG + 2));
const shift1_amt_u7 = @intCast(u7, shift1_amt);
const shift2_amt = @intCast(i32, N + (FLT_MANT_DIG + 2)) - sd;
const shift2_amt_u7 = @intCast(u7, shift2_amt);
a = (a >> shift1_amt_u7) | @boolToInt((a & (@intCast(u128, @maxValue(u128)) >> shift2_amt_u7)) != 0);
},
}
// finish
a |= @boolToInt((a & 4) != 0); // Or P into R
a +%= 1; // round - this step may add a significant bit
a >>= 2; // dump Q and R
// a is now rounded to FLT_MANT_DIG or FLT_MANT_DIG+1 bits
if ((a & (u128(1) << FLT_MANT_DIG)) != 0) {
a >>= 1;
e +%= 1;
}
// a is now rounded to FLT_MANT_DIG bits
} else {
a <<= @intCast(u7, FLT_MANT_DIG - sd);
// a is now rounded to FLT_MANT_DIG bits
}
const s = @bitCast(u128, arg) >> (128 - 32);
const r = (@intCast(u32, s) & 0x80000000) | // sign
(@intCast(u32, (e + 127)) << 23) | // exponent
(@truncate(u32, a) & 0x007fffff); // mantissa-high
return @bitCast(f32, r);
}
test "import floattisf" {
_ = @import("floattisf_test.zig");
}

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const __floattisf = @import("floattisf.zig").__floattisf;
const assert = @import("std").debug.assert;
fn test__floattisf(a: i128, expected: f32) void {
const x = __floattisf(a);
assert(x == expected);
}
test "floattisf" {
test__floattisf(0, 0.0);
test__floattisf(1, 1.0);
test__floattisf(2, 2.0);
test__floattisf(-1, -1.0);
test__floattisf(-2, -2.0);
test__floattisf(0x7FFFFF8000000000, 0x1.FFFFFEp+62);
test__floattisf(0x7FFFFF0000000000, 0x1.FFFFFCp+62);
test__floattisf(make_ti(0xFFFFFFFFFFFFFFFF, 0x8000008000000000), -0x1.FFFFFEp+62);
test__floattisf(make_ti(0xFFFFFFFFFFFFFFFF, 0x8000010000000000), -0x1.FFFFFCp+62);
test__floattisf(make_ti(0xFFFFFFFFFFFFFFFF, 0x8000000000000000), -0x1.000000p+63);
test__floattisf(make_ti(0xFFFFFFFFFFFFFFFF, 0x8000000000000001), -0x1.000000p+63);
test__floattisf(0x0007FB72E8000000, 0x1.FEDCBAp+50);
test__floattisf(0x0007FB72EA000000, 0x1.FEDCBAp+50);
test__floattisf(0x0007FB72EB000000, 0x1.FEDCBAp+50);
test__floattisf(0x0007FB72EBFFFFFF, 0x1.FEDCBAp+50);
test__floattisf(0x0007FB72EC000000, 0x1.FEDCBCp+50);
test__floattisf(0x0007FB72E8000001, 0x1.FEDCBAp+50);
test__floattisf(0x0007FB72E6000000, 0x1.FEDCBAp+50);
test__floattisf(0x0007FB72E7000000, 0x1.FEDCBAp+50);
test__floattisf(0x0007FB72E7FFFFFF, 0x1.FEDCBAp+50);
test__floattisf(0x0007FB72E4000001, 0x1.FEDCBAp+50);
test__floattisf(0x0007FB72E4000000, 0x1.FEDCB8p+50);
test__floattisf(make_ti(0x0007FB72E8000000, 0), 0x1.FEDCBAp+114);
test__floattisf(make_ti(0x0007FB72EA000000, 0), 0x1.FEDCBAp+114);
test__floattisf(make_ti(0x0007FB72EB000000, 0), 0x1.FEDCBAp+114);
test__floattisf(make_ti(0x0007FB72EBFFFFFF, 0), 0x1.FEDCBAp+114);
test__floattisf(make_ti(0x0007FB72EC000000, 0), 0x1.FEDCBCp+114);
test__floattisf(make_ti(0x0007FB72E8000001, 0), 0x1.FEDCBAp+114);
test__floattisf(make_ti(0x0007FB72E6000000, 0), 0x1.FEDCBAp+114);
test__floattisf(make_ti(0x0007FB72E7000000, 0), 0x1.FEDCBAp+114);
test__floattisf(make_ti(0x0007FB72E7FFFFFF, 0), 0x1.FEDCBAp+114);
test__floattisf(make_ti(0x0007FB72E4000001, 0), 0x1.FEDCBAp+114);
test__floattisf(make_ti(0x0007FB72E4000000, 0), 0x1.FEDCB8p+114);
}
fn make_ti(high: u64, low: u64) i128 {
var result: u128 = high;
result <<= 64;
result |= low;
return @bitCast(i128, result);
}

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const builtin = @import("builtin");
const is_test = builtin.is_test;
const LDBL_MANT_DIG = 113;
pub extern fn __floattitf(arg: i128) f128 {
@setRuntimeSafety(is_test);
if (arg == 0)
return 0.0;
var ai = arg;
const N: u32 = 128;
const si = ai >> @intCast(u7, (N - 1));
ai = ((ai ^ si) -% si);
var a = @bitCast(u128, ai);
const sd = @bitCast(i32, N - @clz(a)); // number of significant digits
var e: i32 = sd - 1; // exponent
if (sd > LDBL_MANT_DIG) {
// start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx
// finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR
// 12345678901234567890123456
// 1 = msb 1 bit
// P = bit LDBL_MANT_DIG-1 bits to the right of 1
// Q = bit LDBL_MANT_DIG bits to the right of 1
// R = "or" of all bits to the right of Q
switch (sd) {
LDBL_MANT_DIG + 1 => {
a <<= 1;
},
LDBL_MANT_DIG + 2 => {},
else => {
const shift1_amt = @intCast(i32, sd - (LDBL_MANT_DIG + 2));
const shift1_amt_u7 = @intCast(u7, shift1_amt);
const shift2_amt = @intCast(i32, N + (LDBL_MANT_DIG + 2)) - sd;
const shift2_amt_u7 = @intCast(u7, shift2_amt);
a = (a >> shift1_amt_u7) | @boolToInt((a & (@intCast(u128, @maxValue(u128)) >> shift2_amt_u7)) != 0);
},
}
// finish
a |= @boolToInt((a & 4) != 0); // Or P into R
a +%= 1; // round - this step may add a significant bit
a >>= 2; // dump Q and R
// a is now rounded to LDBL_MANT_DIG or LDBL_MANT_DIG+1 bits
if ((a & (u128(1) << LDBL_MANT_DIG)) != 0) {
a >>= 1;
e +%= 1;
}
// a is now rounded to LDBL_MANT_DIG bits
} else {
a <<= @intCast(u7, LDBL_MANT_DIG - sd);
// a is now rounded to LDBL_MANT_DIG bits
}
const s = @bitCast(u128, arg) >> (128 - 64);
const high: u128 = (@intCast(u64, s) & 0x8000000000000000) | // sign
(@intCast(u64, (e + 16383)) << 48) | // exponent
(@truncate(u64, a >> 64) & 0x0000ffffffffffff); // mantissa-high
const low = @truncate(u64, a); // mantissa-low
return @bitCast(f128, low | (high << 64));
}
test "import floattitf" {
_ = @import("floattitf_test.zig");
}

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const __floattitf = @import("floattitf.zig").__floattitf;
const assert = @import("std").debug.assert;
fn test__floattitf(a: i128, expected: f128) void {
const x = __floattitf(a);
assert(x == expected);
}
test "floattitf" {
test__floattitf(0, 0.0);
test__floattitf(1, 1.0);
test__floattitf(2, 2.0);
test__floattitf(20, 20.0);
test__floattitf(-1, -1.0);
test__floattitf(-2, -2.0);
test__floattitf(-20, -20.0);
test__floattitf(0x7FFFFF8000000000, 0x1.FFFFFEp+62);
test__floattitf(0x7FFFFFFFFFFFF800, 0x1.FFFFFFFFFFFFEp+62);
test__floattitf(0x7FFFFF0000000000, 0x1.FFFFFCp+62);
test__floattitf(0x7FFFFFFFFFFFF000, 0x1.FFFFFFFFFFFFCp+62);
test__floattitf(make_ti(0x8000008000000000, 0), -0x1.FFFFFEp+126);
test__floattitf(make_ti(0x8000000000000800, 0), -0x1.FFFFFFFFFFFFEp+126);
test__floattitf(make_ti(0x8000010000000000, 0), -0x1.FFFFFCp+126);
test__floattitf(make_ti(0x8000000000001000, 0), -0x1.FFFFFFFFFFFFCp+126);
test__floattitf(make_ti(0x8000000000000000, 0), -0x1.000000p+127);
test__floattitf(make_ti(0x8000000000000001, 0), -0x1.FFFFFFFFFFFFFFFCp+126);
test__floattitf(0x0007FB72E8000000, 0x1.FEDCBAp+50);
test__floattitf(0x0007FB72EA000000, 0x1.FEDCBA8p+50);
test__floattitf(0x0007FB72EB000000, 0x1.FEDCBACp+50);
test__floattitf(0x0007FB72EBFFFFFF, 0x1.FEDCBAFFFFFFCp+50);
test__floattitf(0x0007FB72EC000000, 0x1.FEDCBBp+50);
test__floattitf(0x0007FB72E8000001, 0x1.FEDCBA0000004p+50);
test__floattitf(0x0007FB72E6000000, 0x1.FEDCB98p+50);
test__floattitf(0x0007FB72E7000000, 0x1.FEDCB9Cp+50);
test__floattitf(0x0007FB72E7FFFFFF, 0x1.FEDCB9FFFFFFCp+50);
test__floattitf(0x0007FB72E4000001, 0x1.FEDCB90000004p+50);
test__floattitf(0x0007FB72E4000000, 0x1.FEDCB9p+50);
test__floattitf(0x023479FD0E092DC0, 0x1.1A3CFE870496Ep+57);
test__floattitf(0x023479FD0E092DA1, 0x1.1A3CFE870496D08p+57);
test__floattitf(0x023479FD0E092DB0, 0x1.1A3CFE870496D8p+57);
test__floattitf(0x023479FD0E092DB8, 0x1.1A3CFE870496DCp+57);
test__floattitf(0x023479FD0E092DB6, 0x1.1A3CFE870496DBp+57);
test__floattitf(0x023479FD0E092DBF, 0x1.1A3CFE870496DF8p+57);
test__floattitf(0x023479FD0E092DC1, 0x1.1A3CFE870496E08p+57);
test__floattitf(0x023479FD0E092DC7, 0x1.1A3CFE870496E38p+57);
test__floattitf(0x023479FD0E092DC8, 0x1.1A3CFE870496E4p+57);
test__floattitf(0x023479FD0E092DCF, 0x1.1A3CFE870496E78p+57);
test__floattitf(0x023479FD0E092DD0, 0x1.1A3CFE870496E8p+57);
test__floattitf(0x023479FD0E092DD1, 0x1.1A3CFE870496E88p+57);
test__floattitf(0x023479FD0E092DD8, 0x1.1A3CFE870496ECp+57);
test__floattitf(0x023479FD0E092DDF, 0x1.1A3CFE870496EF8p+57);
test__floattitf(0x023479FD0E092DE0, 0x1.1A3CFE870496Fp+57);
test__floattitf(make_ti(0x023479FD0E092DC0, 0), 0x1.1A3CFE870496Ep+121);
test__floattitf(make_ti(0x023479FD0E092DA1, 1), 0x1.1A3CFE870496D08p+121);
test__floattitf(make_ti(0x023479FD0E092DB0, 2), 0x1.1A3CFE870496D8p+121);
test__floattitf(make_ti(0x023479FD0E092DB8, 3), 0x1.1A3CFE870496DCp+121);
test__floattitf(make_ti(0x023479FD0E092DB6, 4), 0x1.1A3CFE870496DBp+121);
test__floattitf(make_ti(0x023479FD0E092DBF, 5), 0x1.1A3CFE870496DF8p+121);
test__floattitf(make_ti(0x023479FD0E092DC1, 6), 0x1.1A3CFE870496E08p+121);
test__floattitf(make_ti(0x023479FD0E092DC7, 7), 0x1.1A3CFE870496E38p+121);
test__floattitf(make_ti(0x023479FD0E092DC8, 8), 0x1.1A3CFE870496E4p+121);
test__floattitf(make_ti(0x023479FD0E092DCF, 9), 0x1.1A3CFE870496E78p+121);
test__floattitf(make_ti(0x023479FD0E092DD0, 0), 0x1.1A3CFE870496E8p+121);
test__floattitf(make_ti(0x023479FD0E092DD1, 11), 0x1.1A3CFE870496E88p+121);
test__floattitf(make_ti(0x023479FD0E092DD8, 12), 0x1.1A3CFE870496ECp+121);
test__floattitf(make_ti(0x023479FD0E092DDF, 13), 0x1.1A3CFE870496EF8p+121);
test__floattitf(make_ti(0x023479FD0E092DE0, 14), 0x1.1A3CFE870496Fp+121);
test__floattitf(make_ti(0, 0xFFFFFFFFFFFFFFFF), 0x1.FFFFFFFFFFFFFFFEp+63);
test__floattitf(make_ti(0x123456789ABCDEF0, 0x123456789ABC2801), 0x1.23456789ABCDEF0123456789ABC3p+124);
test__floattitf(make_ti(0x123456789ABCDEF0, 0x123456789ABC3000), 0x1.23456789ABCDEF0123456789ABC3p+124);
test__floattitf(make_ti(0x123456789ABCDEF0, 0x123456789ABC37FF), 0x1.23456789ABCDEF0123456789ABC3p+124);
test__floattitf(make_ti(0x123456789ABCDEF0, 0x123456789ABC3800), 0x1.23456789ABCDEF0123456789ABC4p+124);
test__floattitf(make_ti(0x123456789ABCDEF0, 0x123456789ABC4000), 0x1.23456789ABCDEF0123456789ABC4p+124);
test__floattitf(make_ti(0x123456789ABCDEF0, 0x123456789ABC47FF), 0x1.23456789ABCDEF0123456789ABC4p+124);
test__floattitf(make_ti(0x123456789ABCDEF0, 0x123456789ABC4800), 0x1.23456789ABCDEF0123456789ABC4p+124);
test__floattitf(make_ti(0x123456789ABCDEF0, 0x123456789ABC4801), 0x1.23456789ABCDEF0123456789ABC5p+124);
test__floattitf(make_ti(0x123456789ABCDEF0, 0x123456789ABC57FF), 0x1.23456789ABCDEF0123456789ABC5p+124);
}
fn make_ti(high: u64, low: u64) i128 {
var result: u128 = high;
result <<= 64;
result |= low;
return @bitCast(i128, result);
}

View File

@ -21,6 +21,10 @@ comptime {
@export("__unordtf2", @import("comparetf2.zig").__unordtf2, linkage);
@export("__floattitf", @import("floattitf.zig").__floattitf, linkage);
@export("__floattidf", @import("floattidf.zig").__floattidf, linkage);
@export("__floattisf", @import("floattisf.zig").__floattisf, linkage);
@export("__floatunditf", @import("floatunditf.zig").__floatunditf, linkage);
@export("__floatunsitf", @import("floatunsitf.zig").__floatunsitf, linkage);