66 lines
2.5 KiB
Zig
66 lines
2.5 KiB
Zig
const __fixdfti = @import("fixdfti.zig").__fixdfti;
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const std = @import("std");
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const math = std.math;
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const testing = std.testing;
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const warn = std.debug.warn;
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fn test__fixdfti(a: f64, expected: i128) void {
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const x = __fixdfti(a);
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//warn("a={}:{x} x={}:{x} expected={}:{x}:@as(u64, {x})\n", .{a, @bitCast(u64, a), x, x, expected, expected, @bitCast(u128, expected)});
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testing.expect(x == expected);
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}
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test "fixdfti" {
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//warn("\n", .{});
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test__fixdfti(-math.f64_max, math.minInt(i128));
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test__fixdfti(-0x1.FFFFFFFFFFFFFp+1023, math.minInt(i128));
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test__fixdfti(-0x1.FFFFFFFFFFFFFp+1023, -0x80000000000000000000000000000000);
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test__fixdfti(-0x1.0000000000000p+127, -0x80000000000000000000000000000000);
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test__fixdfti(-0x1.FFFFFFFFFFFFFp+126, -0x7FFFFFFFFFFFFC000000000000000000);
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test__fixdfti(-0x1.FFFFFFFFFFFFEp+126, -0x7FFFFFFFFFFFF8000000000000000000);
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test__fixdfti(-0x1.0000000000001p+63, -0x8000000000000800);
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test__fixdfti(-0x1.0000000000000p+63, -0x8000000000000000);
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test__fixdfti(-0x1.FFFFFFFFFFFFFp+62, -0x7FFFFFFFFFFFFC00);
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test__fixdfti(-0x1.FFFFFFFFFFFFEp+62, -0x7FFFFFFFFFFFF800);
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test__fixdfti(-0x1.FFFFFEp+62, -0x7fffff8000000000);
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test__fixdfti(-0x1.FFFFFCp+62, -0x7fffff0000000000);
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test__fixdfti(-2.01, -2);
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test__fixdfti(-2.0, -2);
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test__fixdfti(-1.99, -1);
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test__fixdfti(-1.0, -1);
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test__fixdfti(-0.99, 0);
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test__fixdfti(-0.5, 0);
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test__fixdfti(-math.f64_min, 0);
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test__fixdfti(0.0, 0);
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test__fixdfti(math.f64_min, 0);
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test__fixdfti(0.5, 0);
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test__fixdfti(0.99, 0);
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test__fixdfti(1.0, 1);
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test__fixdfti(1.5, 1);
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test__fixdfti(1.99, 1);
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test__fixdfti(2.0, 2);
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test__fixdfti(2.01, 2);
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test__fixdfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000);
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test__fixdfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000);
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test__fixdfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800);
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test__fixdfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00);
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test__fixdfti(0x1.0000000000000p+63, 0x8000000000000000);
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test__fixdfti(0x1.0000000000001p+63, 0x8000000000000800);
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test__fixdfti(0x1.FFFFFFFFFFFFEp+126, 0x7FFFFFFFFFFFF8000000000000000000);
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test__fixdfti(0x1.FFFFFFFFFFFFFp+126, 0x7FFFFFFFFFFFFC000000000000000000);
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test__fixdfti(0x1.0000000000000p+127, 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);
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test__fixdfti(0x1.FFFFFFFFFFFFFp+1023, 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);
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test__fixdfti(0x1.FFFFFFFFFFFFFp+1023, math.maxInt(i128));
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test__fixdfti(math.f64_max, math.maxInt(i128));
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}
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