Add add compiler_rt routines for float to signed integer conversion
And add std.math.f128_* constants.
The routines are:
__fixdfdi, __fixdfsi, __fixdfti,
__fixsfdi, __fixsfsi, __fixsfti,
__fixtfdi, __fixtfsi, __fixtfti.
These all call fixint which is a generic zig function that does the
conversion:
pub fn fixint(comptime fp_t: type, comptime fixint_t: type, a: fp_t) fixint_t
There are also a set tests:
__fixdfdi_test, __fixdfsi_test, __fixdfti_test,
__fixsfdi_test, __fixsfsi_test, __fixsfti_test,
__fixtfdi_test, __fixtfsi_test, __fixtfti_test.
2018-12-06 08:50:33 +08:00
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const __fixsfdi = @import("fixsfdi.zig").__fixsfdi;
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const std = @import("std");
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const math = std.math;
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2019-02-09 07:18:47 +08:00
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const testing = std.testing;
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Add add compiler_rt routines for float to signed integer conversion
And add std.math.f128_* constants.
The routines are:
__fixdfdi, __fixdfsi, __fixdfti,
__fixsfdi, __fixsfsi, __fixsfti,
__fixtfdi, __fixtfsi, __fixtfti.
These all call fixint which is a generic zig function that does the
conversion:
pub fn fixint(comptime fp_t: type, comptime fixint_t: type, a: fp_t) fixint_t
There are also a set tests:
__fixdfdi_test, __fixdfsi_test, __fixdfti_test,
__fixsfdi_test, __fixsfsi_test, __fixsfti_test,
__fixtfdi_test, __fixtfsi_test, __fixtfti_test.
2018-12-06 08:50:33 +08:00
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const warn = std.debug.warn;
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fn test__fixsfdi(a: f32, expected: i64) void {
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const x = __fixsfdi(a);
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//warn("a={}:{x} x={}:{x} expected={}:{x}:u32({x})\n", a, @bitCast(u32, a), x, x, expected, expected, @bitCast(u64, expected));
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2019-02-09 07:18:47 +08:00
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testing.expect(x == expected);
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Add add compiler_rt routines for float to signed integer conversion
And add std.math.f128_* constants.
The routines are:
__fixdfdi, __fixdfsi, __fixdfti,
__fixsfdi, __fixsfsi, __fixsfti,
__fixtfdi, __fixtfsi, __fixtfti.
These all call fixint which is a generic zig function that does the
conversion:
pub fn fixint(comptime fp_t: type, comptime fixint_t: type, a: fp_t) fixint_t
There are also a set tests:
__fixdfdi_test, __fixdfsi_test, __fixdfti_test,
__fixsfdi_test, __fixsfsi_test, __fixsfti_test,
__fixtfdi_test, __fixtfsi_test, __fixtfti_test.
2018-12-06 08:50:33 +08:00
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}
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test "fixsfdi" {
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//warn("\n");
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test__fixsfdi(-math.f32_max, math.minInt(i64));
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test__fixsfdi(-0x1.FFFFFFFFFFFFFp+1023, math.minInt(i64));
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test__fixsfdi(-0x1.FFFFFFFFFFFFFp+1023, -0x8000000000000000);
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test__fixsfdi(-0x1.0000000000000p+127, -0x8000000000000000);
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test__fixsfdi(-0x1.FFFFFFFFFFFFFp+126, -0x8000000000000000);
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test__fixsfdi(-0x1.FFFFFFFFFFFFEp+126, -0x8000000000000000);
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test__fixsfdi(-0x1.0000000000001p+63, -0x8000000000000000);
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test__fixsfdi(-0x1.0000000000000p+63, -0x8000000000000000);
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test__fixsfdi(-0x1.FFFFFFFFFFFFFp+62, -0x8000000000000000);
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test__fixsfdi(-0x1.FFFFFFFFFFFFEp+62, -0x8000000000000000);
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test__fixsfdi(-0x1.FFFFFFp+62, -0x8000000000000000);
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test__fixsfdi(-0x1.FFFFFEp+62, -0x7fffff8000000000);
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test__fixsfdi(-0x1.FFFFFCp+62, -0x7fffff0000000000);
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test__fixsfdi(-2.01, -2);
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test__fixsfdi(-2.0, -2);
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test__fixsfdi(-1.99, -1);
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test__fixsfdi(-1.0, -1);
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test__fixsfdi(-0.99, 0);
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test__fixsfdi(-0.5, 0);
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test__fixsfdi(-math.f32_min, 0);
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test__fixsfdi(0.0, 0);
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test__fixsfdi(math.f32_min, 0);
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test__fixsfdi(0.5, 0);
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test__fixsfdi(0.99, 0);
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test__fixsfdi(1.0, 1);
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test__fixsfdi(1.5, 1);
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test__fixsfdi(1.99, 1);
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test__fixsfdi(2.0, 2);
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test__fixsfdi(2.01, 2);
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test__fixsfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000);
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test__fixsfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000);
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test__fixsfdi(0x1.FFFFFFp+62, 0x7FFFFFFFFFFFFFFF);
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test__fixsfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFFFFF);
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test__fixsfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFFFF);
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test__fixsfdi(0x1.0000000000000p+63, 0x7FFFFFFFFFFFFFFF);
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test__fixsfdi(0x1.0000000000001p+63, 0x7FFFFFFFFFFFFFFF);
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test__fixsfdi(0x1.FFFFFFFFFFFFEp+126, 0x7FFFFFFFFFFFFFFF);
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test__fixsfdi(0x1.FFFFFFFFFFFFFp+126, 0x7FFFFFFFFFFFFFFF);
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test__fixsfdi(0x1.0000000000000p+127, 0x7FFFFFFFFFFFFFFF);
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test__fixsfdi(0x1.FFFFFFFFFFFFFp+1023, 0x7FFFFFFFFFFFFFFF);
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test__fixsfdi(0x1.FFFFFFFFFFFFFp+1023, math.maxInt(i64));
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test__fixsfdi(math.f64_max, math.maxInt(i64));
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}
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