89 lines
3.0 KiB
Zig
89 lines
3.0 KiB
Zig
const std = @import("std");
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const expect = std.testing.expect;
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const mem = std.mem;
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const builtin = @import("builtin");
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test "integer widening" {
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if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
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if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
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if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
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if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
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var a: u8 = 250;
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var b: u16 = a;
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var c: u32 = b;
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var d: u64 = c;
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var e: u64 = d;
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var f: u128 = e;
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_ = .{ &a, &b, &c, &d, &e, &f };
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try expect(f == a);
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}
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fn zero() u0 {
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return 0;
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}
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test "integer widening u0 to u8" {
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const a: u8 = zero();
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try expect(a == 0);
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}
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test "implicit unsigned integer to signed integer" {
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if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
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if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
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if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
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var a: u8 = 250;
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var b: i16 = a;
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_ = .{ &a, &b };
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try expect(b == 250);
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}
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test "float widening" {
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if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
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if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
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if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
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if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
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if (builtin.zig_backend == .stage2_x86_64 and builtin.target.ofmt != .elf) return error.SkipZigTest;
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var a: f16 = 12.34;
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var b: f32 = a;
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var c: f64 = b;
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var d: f128 = c;
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_ = .{ &a, &b, &c, &d };
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try expect(a == b);
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try expect(b == c);
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try expect(c == d);
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var e: f80 = c;
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_ = &e;
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try expect(c == e);
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}
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test "float widening f16 to f128" {
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if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
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if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
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if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
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if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
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if (builtin.zig_backend == .stage2_x86_64 and builtin.target.ofmt != .elf) return error.SkipZigTest;
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var x: f16 = 12.34;
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var y: f128 = x;
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_ = .{ &x, &y };
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try expect(x == y);
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}
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test "cast small unsigned to larger signed" {
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if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
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if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
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if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
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if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
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try expect(castSmallUnsignedToLargerSigned1(200) == @as(i16, 200));
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try expect(castSmallUnsignedToLargerSigned2(9999) == @as(i64, 9999));
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}
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fn castSmallUnsignedToLargerSigned1(x: u8) i16 {
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return x;
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}
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fn castSmallUnsignedToLargerSigned2(x: u16) i64 {
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return x;
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}
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