26 lines
685 B
Zig
26 lines
685 B
Zig
const compiler_rt = @import("../compiler_rt.zig");
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const symbol = compiler_rt.symbol;
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const addf3 = @import("./addf3.zig").addf3;
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comptime {
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if (compiler_rt.want_ppc_abi) {
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symbol(&__subtf3, "__subkf3");
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} else if (compiler_rt.want_sparc_abi) {
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symbol(&_Qp_sub, "_Qp_sub");
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}
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symbol(&__subtf3, "__subtf3");
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}
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pub fn __subtf3(a: f128, b: f128) callconv(.c) f128 {
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return sub(a, b);
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}
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fn _Qp_sub(c: *f128, a: *const f128, b: *const f128) callconv(.c) void {
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c.* = sub(a.*, b.*);
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}
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inline fn sub(a: f128, b: f128) f128 {
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const neg_b = @as(f128, @bitCast(@as(u128, @bitCast(b)) ^ (@as(u128, 1) << 127)));
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return addf3(f128, a, neg_b);
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}
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