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41dd2beaac
* unify the logic for exporting math functions from compiler-rt,
with the appropriate suffixes and prefixes.
- add all missing f128 and f80 exports. Functions with missing
implementations call other functions and have TODO comments.
- also add f16 functions
* move math functions from freestanding libc to compiler-rt (#7265)
* enable all the f128 and f80 code in the stage2 compiler and behavior
tests (#11161).
* update std lib to use builtins rather than `std.math`.
53 lines
2.0 KiB
Zig
53 lines
2.0 KiB
Zig
const std = @import("std");
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const fmod = @import("fmod.zig");
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const testing = std.testing;
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fn test_fmodq(a: f128, b: f128, exp: f128) !void {
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const res = fmod.fmodq(a, b);
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try testing.expect(exp == res);
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}
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fn test_fmodq_nans() !void {
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try testing.expect(std.math.isNan(fmod.fmodq(1.0, std.math.nan(f128))));
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try testing.expect(std.math.isNan(fmod.fmodq(1.0, -std.math.nan(f128))));
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try testing.expect(std.math.isNan(fmod.fmodq(std.math.nan(f128), 1.0)));
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try testing.expect(std.math.isNan(fmod.fmodq(-std.math.nan(f128), 1.0)));
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}
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fn test_fmodq_infs() !void {
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try testing.expect(fmod.fmodq(1.0, std.math.inf(f128)) == 1.0);
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try testing.expect(fmod.fmodq(1.0, -std.math.inf(f128)) == 1.0);
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try testing.expect(std.math.isNan(fmod.fmodq(std.math.inf(f128), 1.0)));
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try testing.expect(std.math.isNan(fmod.fmodq(-std.math.inf(f128), 1.0)));
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}
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test "fmodq" {
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try test_fmodq(6.8, 4.0, 2.8);
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try test_fmodq(6.8, -4.0, 2.8);
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try test_fmodq(-6.8, 4.0, -2.8);
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try test_fmodq(-6.8, -4.0, -2.8);
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try test_fmodq(3.0, 2.0, 1.0);
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try test_fmodq(-5.0, 3.0, -2.0);
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try test_fmodq(3.0, 2.0, 1.0);
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try test_fmodq(1.0, 2.0, 1.0);
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try test_fmodq(0.0, 1.0, 0.0);
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try test_fmodq(-0.0, 1.0, -0.0);
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try test_fmodq(7046119.0, 5558362.0, 1487757.0);
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try test_fmodq(9010357.0, 1957236.0, 1181413.0);
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try test_fmodq(5192296858534827628530496329220095, 10.0, 5.0);
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try test_fmodq(5192296858534827628530496329220095, 922337203681230954775807, 220474884073715748246157);
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// Denormals
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const a1: f128 = 0xedcb34a235253948765432134674p-16494;
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const b1: f128 = 0x5d2e38791cfbc0737402da5a9518p-16494;
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const exp1: f128 = 0x336ec3affb2db8618e4e7d5e1c44p-16494;
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try test_fmodq(a1, b1, exp1);
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const a2: f128 = 0x0.7654_3210_fdec_ba98_7654_3210_fdecp-16382;
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const b2: f128 = 0x0.0012_fdac_bdef_1234_fdec_3222_1111p-16382;
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const exp2: f128 = 0x0.0001_aecd_9d66_4a6e_67b7_d7d0_a901p-16382;
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try test_fmodq(a2, b2, exp2);
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try test_fmodq_nans();
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try test_fmodq_infs();
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}
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