diff --git a/std/special/compiler_rt/floattidf.zig b/std/special/compiler_rt/floattidf.zig new file mode 100644 index 000000000..8a627fdc0 --- /dev/null +++ b/std/special/compiler_rt/floattidf.zig @@ -0,0 +1,69 @@ +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"); +} diff --git a/std/special/compiler_rt/floattidf_test.zig b/std/special/compiler_rt/floattidf_test.zig new file mode 100644 index 000000000..25dc59505 --- /dev/null +++ b/std/special/compiler_rt/floattidf_test.zig @@ -0,0 +1,84 @@ +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); +} diff --git a/std/special/compiler_rt/floattisf.zig b/std/special/compiler_rt/floattisf.zig new file mode 100644 index 000000000..cbdd30418 --- /dev/null +++ b/std/special/compiler_rt/floattisf.zig @@ -0,0 +1,69 @@ +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"); +} diff --git a/std/special/compiler_rt/floattisf_test.zig b/std/special/compiler_rt/floattisf_test.zig new file mode 100644 index 000000000..ecb8eac60 --- /dev/null +++ b/std/special/compiler_rt/floattisf_test.zig @@ -0,0 +1,60 @@ +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); +} diff --git a/std/special/compiler_rt/floattitf.zig b/std/special/compiler_rt/floattitf.zig new file mode 100644 index 000000000..531634e49 --- /dev/null +++ b/std/special/compiler_rt/floattitf.zig @@ -0,0 +1,69 @@ +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"); +} diff --git a/std/special/compiler_rt/floattitf_test.zig b/std/special/compiler_rt/floattitf_test.zig new file mode 100644 index 000000000..da2ccc8b3 --- /dev/null +++ b/std/special/compiler_rt/floattitf_test.zig @@ -0,0 +1,96 @@ +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); +} diff --git a/std/special/compiler_rt/index.zig b/std/special/compiler_rt/index.zig index 0eca064dd..54a461d0f 100644 --- a/std/special/compiler_rt/index.zig +++ b/std/special/compiler_rt/index.zig @@ -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);