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| author | Veikka Tuominen <git@vexu.eu> | 2022-01-19 18:47:51 +0200 |
|---|---|---|
| committer | Andrew Kelley <andrew@ziglang.org> | 2022-01-28 11:45:04 -0700 |
| commit | 67d04a988a06f52f4abca848f3579a8037070afe (patch) | |
| tree | f59135df73028b28f8a4618ab3f6bba26fab04f6 /lib/std/math.zig | |
| parent | a31a749c42505e53308c0f2426db283ea130e776 (diff) | |
| download | zig-67d04a988a06f52f4abca848f3579a8037070afe.tar.gz zig-67d04a988a06f52f4abca848f3579a8037070afe.zip | |
std: add f80 bits
Diffstat (limited to 'lib/std/math.zig')
| -rw-r--r-- | lib/std/math.zig | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/lib/std/math.zig b/lib/std/math.zig index cb911b1263..59532d7ab2 100644 --- a/lib/std/math.zig +++ b/lib/std/math.zig @@ -43,7 +43,21 @@ pub const f128_max = @bitCast(f128, @as(u128, 0x7FFEFFFFFFFFFFFFFFFFFFFFFFFFFFFF pub const f128_epsilon = @bitCast(f128, @as(u128, 0x3F8F0000000000000000000000000000)); pub const f128_toint = 1.0 / f128_epsilon; +const F80Repr = if (@import("builtin").cpu.arch.endian() == .Little) extern struct { + fraction: u64, + exp: u16, +} else extern struct { + exp: u16, + fraction: u64, +}; + // float.h details +pub const f80_true_min = @ptrCast(*const f80, &F80Repr{ .fraction = 1, .exp = 0 }).*; +pub const f80_min = @ptrCast(*const f80, &F80Repr{ .fraction = 0x8000000000000000, .exp = 1 }).*; +pub const f80_max = @ptrCast(*const f80, &F80Repr{ .fraction = 0xFFFFFFFFFFFFFFFF, .exp = 0x7FFE }).*; +pub const f80_epsilon = @ptrCast(*const f80, &F80Repr{ .fraction = 0x8000000000000000, .exp = 0x3FC0 }).*; +pub const f80_toint = 1.0 / f80_epsilon; + pub const f64_true_min = 4.94065645841246544177e-324; pub const f64_min = 2.2250738585072014e-308; pub const f64_max = 1.79769313486231570815e+308; @@ -91,6 +105,10 @@ pub const qnan_f64 = @bitCast(f64, qnan_u64); pub const inf_u64 = @as(u64, 0x7FF << 52); pub const inf_f64 = @bitCast(f64, inf_u64); +pub const inf_f80 = @ptrCast(*const f80, &F80Repr{ .fraction = 0x8000000000000000, .exp = 0x7fff }).*; +pub const nan_f80 = @ptrCast(*const f80, &F80Repr{ .fraction = 0xA000000000000000, .exp = 0x7fff }).*; +pub const qnan_f80 = @ptrCast(*const f80, &F80Repr{ .fraction = 0xC000000000000000, .exp = 0x7fff }).*; + pub const nan_u128 = @as(u128, 0x7fff0000000000000000000000000001); pub const nan_f128 = @bitCast(f128, nan_u128); |