zig/lib/compiler_rt/subxf3.zig
2025-03-05 03:01:43 +00:00

16 lines
399 B
Zig

const std = @import("std");
const common = @import("./common.zig");
pub const panic = common.panic;
comptime {
@export(&__subxf3, .{ .name = "__subxf3", .linkage = common.linkage, .visibility = common.visibility });
}
fn __subxf3(a: f80, b: f80) callconv(.c) f80 {
var b_rep = std.math.F80.fromFloat(b);
b_rep.exp ^= 0x8000;
const neg_b = b_rep.toFloat();
return a + neg_b;
}