mirror of
https://github.com/ziglang/zig.git
synced 2024-11-30 00:52:52 +00:00
69 lines
3.0 KiB
Zig
69 lines
3.0 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 {
|
|
if (common.want_aeabi) {
|
|
@export(&__aeabi_dcmpeq, .{ .name = "__aeabi_dcmpeq", .linkage = common.linkage, .visibility = common.visibility });
|
|
@export(&__aeabi_dcmplt, .{ .name = "__aeabi_dcmplt", .linkage = common.linkage, .visibility = common.visibility });
|
|
@export(&__aeabi_dcmple, .{ .name = "__aeabi_dcmple", .linkage = common.linkage, .visibility = common.visibility });
|
|
} else {
|
|
@export(&__eqdf2, .{ .name = "__eqdf2", .linkage = common.linkage, .visibility = common.visibility });
|
|
@export(&__nedf2, .{ .name = "__nedf2", .linkage = common.linkage, .visibility = common.visibility });
|
|
@export(&__ledf2, .{ .name = "__ledf2", .linkage = common.linkage, .visibility = common.visibility });
|
|
@export(&__cmpdf2, .{ .name = "__cmpdf2", .linkage = common.linkage, .visibility = common.visibility });
|
|
@export(&__ltdf2, .{ .name = "__ltdf2", .linkage = common.linkage, .visibility = common.visibility });
|
|
}
|
|
}
|
|
|
|
/// "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 `__ledf2`, `__eqdf2`, `__nedf2`, `__cmpdf2`,
|
|
/// and `__ltdf2`.
|
|
fn __cmpdf2(a: f64, b: f64) callconv(.C) i32 {
|
|
return @intFromEnum(comparef.cmpf2(f64, 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 __ledf2(a: f64, b: f64) callconv(.C) i32 {
|
|
return __cmpdf2(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, __eqdf2 and __nedf2 are defined
|
|
/// to have the same return value.
|
|
pub fn __eqdf2(a: f64, b: f64) callconv(.C) i32 {
|
|
return __cmpdf2(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, __eqdf2 and __nedf2 are defined
|
|
/// to have the same return value.
|
|
pub fn __nedf2(a: f64, b: f64) callconv(.C) i32 {
|
|
return __cmpdf2(a, b);
|
|
}
|
|
|
|
/// "These functions return a value less than zero if neither argument is NaN, and a
|
|
/// is strictly less than b."
|
|
pub fn __ltdf2(a: f64, b: f64) callconv(.C) i32 {
|
|
return __cmpdf2(a, b);
|
|
}
|
|
|
|
fn __aeabi_dcmpeq(a: f64, b: f64) callconv(.AAPCS) i32 {
|
|
return @intFromBool(comparef.cmpf2(f64, comparef.LE, a, b) == .Equal);
|
|
}
|
|
|
|
fn __aeabi_dcmplt(a: f64, b: f64) callconv(.AAPCS) i32 {
|
|
return @intFromBool(comparef.cmpf2(f64, comparef.LE, a, b) == .Less);
|
|
}
|
|
|
|
fn __aeabi_dcmple(a: f64, b: f64) callconv(.AAPCS) i32 {
|
|
return @intFromBool(comparef.cmpf2(f64, comparef.LE, a, b) != .Greater);
|
|
}
|