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79 lines
2.9 KiB
Zig
79 lines
2.9 KiB
Zig
// SPDX-License-Identifier: MIT
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// Copyright (c) 2015-2021 Zig Contributors
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// This file is part of [zig](https://ziglang.org/), which is MIT licensed.
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// The MIT license requires this copyright notice to be included in all copies
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// and substantial portions of the software.
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const __fixdfsi = @import("fixdfsi.zig").__fixdfsi;
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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__fixdfsi(a: f64, expected: i32) !void {
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const x = __fixdfsi(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(u32, expected)});
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try testing.expect(x == expected);
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}
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test "fixdfsi" {
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//warn("\n", .{});
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try test__fixdfsi(-math.f64_max, math.minInt(i32));
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try test__fixdfsi(-0x1.FFFFFFFFFFFFFp+1023, math.minInt(i32));
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try test__fixdfsi(-0x1.FFFFFFFFFFFFFp+1023, -0x80000000);
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try test__fixdfsi(-0x1.0000000000000p+127, -0x80000000);
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try test__fixdfsi(-0x1.FFFFFFFFFFFFFp+126, -0x80000000);
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try test__fixdfsi(-0x1.FFFFFFFFFFFFEp+126, -0x80000000);
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try test__fixdfsi(-0x1.0000000000001p+63, -0x80000000);
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try test__fixdfsi(-0x1.0000000000000p+63, -0x80000000);
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try test__fixdfsi(-0x1.FFFFFFFFFFFFFp+62, -0x80000000);
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try test__fixdfsi(-0x1.FFFFFFFFFFFFEp+62, -0x80000000);
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try test__fixdfsi(-0x1.FFFFFEp+62, -0x80000000);
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try test__fixdfsi(-0x1.FFFFFCp+62, -0x80000000);
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try test__fixdfsi(-0x1.000000p+31, -0x80000000);
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try test__fixdfsi(-0x1.FFFFFFp+30, -0x7FFFFFC0);
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try test__fixdfsi(-0x1.FFFFFEp+30, -0x7FFFFF80);
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try test__fixdfsi(-2.01, -2);
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try test__fixdfsi(-2.0, -2);
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try test__fixdfsi(-1.99, -1);
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try test__fixdfsi(-1.0, -1);
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try test__fixdfsi(-0.99, 0);
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try test__fixdfsi(-0.5, 0);
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try test__fixdfsi(-math.f64_min, 0);
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try test__fixdfsi(0.0, 0);
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try test__fixdfsi(math.f64_min, 0);
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try test__fixdfsi(0.5, 0);
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try test__fixdfsi(0.99, 0);
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try test__fixdfsi(1.0, 1);
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try test__fixdfsi(1.5, 1);
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try test__fixdfsi(1.99, 1);
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try test__fixdfsi(2.0, 2);
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try test__fixdfsi(2.01, 2);
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try test__fixdfsi(0x1.FFFFFEp+30, 0x7FFFFF80);
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try test__fixdfsi(0x1.FFFFFFp+30, 0x7FFFFFC0);
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try test__fixdfsi(0x1.000000p+31, 0x7FFFFFFF);
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try test__fixdfsi(0x1.FFFFFCp+62, 0x7FFFFFFF);
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try test__fixdfsi(0x1.FFFFFEp+62, 0x7FFFFFFF);
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try test__fixdfsi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFF);
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try test__fixdfsi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFF);
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try test__fixdfsi(0x1.0000000000000p+63, 0x7FFFFFFF);
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try test__fixdfsi(0x1.0000000000001p+63, 0x7FFFFFFF);
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try test__fixdfsi(0x1.FFFFFFFFFFFFEp+126, 0x7FFFFFFF);
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try test__fixdfsi(0x1.FFFFFFFFFFFFFp+126, 0x7FFFFFFF);
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try test__fixdfsi(0x1.0000000000000p+127, 0x7FFFFFFF);
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try test__fixdfsi(0x1.FFFFFFFFFFFFFp+1023, 0x7FFFFFFF);
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try test__fixdfsi(0x1.FFFFFFFFFFFFFp+1023, math.maxInt(i32));
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try test__fixdfsi(math.f64_max, math.maxInt(i32));
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}
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