mirror of
https://github.com/ziglang/zig.git
synced 2024-11-27 23:52:31 +00:00
0d533433e2
This change also exposes some of the existing functions under both the PPC-style names symbols and the compiler-rt-style names, since Zig currently lowers softfloat calls to the latter.
51 lines
2.0 KiB
Zig
51 lines
2.0 KiB
Zig
///! The quoted behavior definitions are from
|
|
///! https://gcc.gnu.org/onlinedocs/gcc-12.1.0/gccint/Soft-float-library-routines.html#Soft-float-library-routines
|
|
const common = @import("./common.zig");
|
|
const comparef = @import("./comparef.zig");
|
|
|
|
pub const panic = common.panic;
|
|
|
|
comptime {
|
|
@export(__eqhf2, .{ .name = "__eqhf2", .linkage = common.linkage });
|
|
@export(__nehf2, .{ .name = "__nehf2", .linkage = common.linkage });
|
|
@export(__lehf2, .{ .name = "__lehf2", .linkage = common.linkage });
|
|
@export(__cmphf2, .{ .name = "__cmphf2", .linkage = common.linkage });
|
|
@export(__lthf2, .{ .name = "__lthf2", .linkage = common.linkage });
|
|
}
|
|
|
|
/// "These functions calculate a <=> b. That is, if a is less than b, they return -1;
|
|
/// if a is greater than b, they return 1; and if a and b are equal they return 0.
|
|
/// If either argument is NaN they return 1..."
|
|
///
|
|
/// Note that this matches the definition of `__lehf2`, `__eqhf2`, `__nehf2`, `__cmphf2`,
|
|
/// and `__lthf2`.
|
|
fn __cmphf2(a: f16, b: f16) callconv(.C) i32 {
|
|
return @enumToInt(comparef.cmpf2(f16, comparef.LE, a, b));
|
|
}
|
|
|
|
/// "These functions return a value less than or equal to zero if neither argument is NaN,
|
|
/// and a is less than or equal to b."
|
|
pub fn __lehf2(a: f16, b: f16) callconv(.C) i32 {
|
|
return __cmphf2(a, b);
|
|
}
|
|
|
|
/// "These functions return zero if neither argument is NaN, and a and b are equal."
|
|
/// Note that due to some kind of historical accident, __eqhf2 and __nehf2 are defined
|
|
/// to have the same return value.
|
|
pub fn __eqhf2(a: f16, b: f16) callconv(.C) i32 {
|
|
return __cmphf2(a, b);
|
|
}
|
|
|
|
/// "These functions return a nonzero value if either argument is NaN, or if a and b are unequal."
|
|
/// Note that due to some kind of historical accident, __eqhf2 and __nehf2 are defined
|
|
/// to have the same return value.
|
|
pub fn __nehf2(a: f16, b: f16) callconv(.C) i32 {
|
|
return __cmphf2(a, b);
|
|
}
|
|
|
|
/// "These functions return a value less than zero if neither argument is NaN, and a
|
|
/// is strictly less than b."
|
|
pub fn __lthf2(a: f16, b: f16) callconv(.C) i32 {
|
|
return __cmphf2(a, b);
|
|
}
|