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rename std lib files to new convention
2019-03-02 16:46:04 -05:00
const std = @import("../std.zig");
move std/debug.zig to a subdirectory self hosted compiler parser tests do some fuzz testing
2017-12-23 22:08:53 -05:00
const math = std.math;
std.debug.assert: remove special case for test builds Previously, std.debug.assert would `@panic` in test builds, if the assertion failed. Now, it's always `unreachable`. This makes release mode test builds more accurately test the actual code that will be run. However this requires tests to call `std.testing.expect` rather than `std.debug.assert` to make sure output is correct. Here is the explanation of when to use either one, copied from the assert doc comments: Inside a test block, it is best to use the `std.testing` module rather than assert, because assert may not detect a test failure in ReleaseFast and ReleaseSafe mode. Outside of a test block, assert is the correct function to use. closes #1304
2019-02-08 18:18:47 -05:00
const expect = std.testing.expect;
Add math library This covers the majority of the functions as covered by the C99 specification for a math library. Code is adapted primarily from musl libc, with the pow and standard trigonometric functions adapted from the Go stdlib. Changes: - Remove assert expose in index and import as needed. - Add float log function and merge with existing base 2 integer implementation. See https://github.com/tiehuis/zig-fmath. See #374.
2017-06-16 20:26:10 +12:00
std.math: Add documentation for all functions and algorithm sources
2019-05-01 18:15:57 +12:00
/// Returns whether x is negative or negative 0.
run zig fmt on std lib and self hosted
2020-07-11 14:09:04 +03:00
pub fn signbit(x: anytype) bool {
Replace @typeOf with @TypeOf in all zig source This change was mostly made with `zig fmt` and this also modified some whitespace. Note that in some files, `zig fmt` produced incorrect code, so the change was made manually.
2019-12-09 21:56:19 +01:00
const T = @TypeOf(x);
explicitly return from blocks instead of last statement being expression value closes #629
2017-12-22 00:50:30 -05:00
return switch (T) {
add std.math f16 signbit support refs #1122
2018-06-30 01:44:54 +02:00
f16 => signbit16(x),
std.math: remove unnecessary inline calls and workaround windows 32 bit test failure See #537
2017-12-22 13:14:07 -05:00
f32 => signbit32(x),
f64 => signbit64(x),
std: Implement signbit for f128
2021-03-23 09:17:57 +01:00
f128 => signbit128(x),
Add math library This covers the majority of the functions as covered by the C99 specification for a math library. Code is adapted primarily from musl libc, with the pow and standard trigonometric functions adapted from the Go stdlib. Changes: - Remove assert expose in index and import as needed. - Add float log function and merge with existing base 2 integer implementation. See https://github.com/tiehuis/zig-fmath. See #374.
2017-06-16 20:26:10 +12:00
else => @compileError("signbit not implemented for " ++ @typeName(T)),
explicitly return from blocks instead of last statement being expression value closes #629
2017-12-22 00:50:30 -05:00
};
Add math library This covers the majority of the functions as covered by the C99 specification for a math library. Code is adapted primarily from musl libc, with the pow and standard trigonometric functions adapted from the Go stdlib. Changes: - Remove assert expose in index and import as needed. - Add float log function and merge with existing base 2 integer implementation. See https://github.com/tiehuis/zig-fmath. See #374.
2017-06-16 20:26:10 +12:00
}
add std.math f16 signbit support refs #1122
2018-06-30 01:44:54 +02:00
fn signbit16(x: f16) bool {
const bits = @bitCast(u16, x);
return bits >> 15 != 0;
}
syntax: functions require return type. remove `->` The purpose of this is: * Only one way to do things * Changing a function with void return type to return a possible error becomes a 1 character change, subtly encouraging people to use errors. See #632 Here are some imperfect sed commands for performing this update: remove arrow: ``` sed -i 's/\(\bfn\b.*\)-> /\1/g' $(find . -name "*.zig") ``` add void: ``` sed -i 's/\(\bfn\b.*\))\s*{/\1) void {/g' $(find ../ -name "*.zig") ``` Some cleanup may be necessary, but this should do the bulk of the work.
2018-01-25 04:10:11 -05:00
fn signbit32(x: f32) bool {
Add math library This covers the majority of the functions as covered by the C99 specification for a math library. Code is adapted primarily from musl libc, with the pow and standard trigonometric functions adapted from the Go stdlib. Changes: - Remove assert expose in index and import as needed. - Add float log function and merge with existing base 2 integer implementation. See https://github.com/tiehuis/zig-fmath. See #374.
2017-06-16 20:26:10 +12:00
const bits = @bitCast(u32, x);
explicitly return from blocks instead of last statement being expression value closes #629
2017-12-22 00:50:30 -05:00
return bits >> 31 != 0;
Add math library This covers the majority of the functions as covered by the C99 specification for a math library. Code is adapted primarily from musl libc, with the pow and standard trigonometric functions adapted from the Go stdlib. Changes: - Remove assert expose in index and import as needed. - Add float log function and merge with existing base 2 integer implementation. See https://github.com/tiehuis/zig-fmath. See #374.
2017-06-16 20:26:10 +12:00
}
syntax: functions require return type. remove `->` The purpose of this is: * Only one way to do things * Changing a function with void return type to return a possible error becomes a 1 character change, subtly encouraging people to use errors. See #632 Here are some imperfect sed commands for performing this update: remove arrow: ``` sed -i 's/\(\bfn\b.*\)-> /\1/g' $(find . -name "*.zig") ``` add void: ``` sed -i 's/\(\bfn\b.*\))\s*{/\1) void {/g' $(find ../ -name "*.zig") ``` Some cleanup may be necessary, but this should do the bulk of the work.
2018-01-25 04:10:11 -05:00
fn signbit64(x: f64) bool {
Add math library This covers the majority of the functions as covered by the C99 specification for a math library. Code is adapted primarily from musl libc, with the pow and standard trigonometric functions adapted from the Go stdlib. Changes: - Remove assert expose in index and import as needed. - Add float log function and merge with existing base 2 integer implementation. See https://github.com/tiehuis/zig-fmath. See #374.
2017-06-16 20:26:10 +12:00
const bits = @bitCast(u64, x);
explicitly return from blocks instead of last statement being expression value closes #629
2017-12-22 00:50:30 -05:00
return bits >> 63 != 0;
Add math library This covers the majority of the functions as covered by the C99 specification for a math library. Code is adapted primarily from musl libc, with the pow and standard trigonometric functions adapted from the Go stdlib. Changes: - Remove assert expose in index and import as needed. - Add float log function and merge with existing base 2 integer implementation. See https://github.com/tiehuis/zig-fmath. See #374.
2017-06-16 20:26:10 +12:00
}
std: Implement signbit for f128
2021-03-23 09:17:57 +01:00
fn signbit128(x: f128) bool {
const bits = @bitCast(u128, x);
return bits >> 127 != 0;
}
workaround for llvm bug See #393 for details
2017-06-19 14:36:33 -04:00
test "math.signbit" {
std: update usage of std.testing
2021-05-04 20:47:26 +03:00
try expect(signbit(@as(f16, 4.0)) == signbit16(4.0));
try expect(signbit(@as(f32, 4.0)) == signbit32(4.0));
try expect(signbit(@as(f64, 4.0)) == signbit64(4.0));
try expect(signbit(@as(f128, 4.0)) == signbit128(4.0));
Add math library This covers the majority of the functions as covered by the C99 specification for a math library. Code is adapted primarily from musl libc, with the pow and standard trigonometric functions adapted from the Go stdlib. Changes: - Remove assert expose in index and import as needed. - Add float log function and merge with existing base 2 integer implementation. See https://github.com/tiehuis/zig-fmath. See #374.
2017-06-16 20:26:10 +12:00
}
add std.math f16 signbit support refs #1122
2018-06-30 01:44:54 +02:00
test "math.signbit16" {
std: update usage of std.testing
2021-05-04 20:47:26 +03:00
try expect(!signbit16(4.0));
try expect(signbit16(-3.0));
add std.math f16 signbit support refs #1122
2018-06-30 01:44:54 +02:00
}
workaround for llvm bug See #393 for details
2017-06-19 14:36:33 -04:00
test "math.signbit32" {
std: update usage of std.testing
2021-05-04 20:47:26 +03:00
try expect(!signbit32(4.0));
try expect(signbit32(-3.0));
Add math library This covers the majority of the functions as covered by the C99 specification for a math library. Code is adapted primarily from musl libc, with the pow and standard trigonometric functions adapted from the Go stdlib. Changes: - Remove assert expose in index and import as needed. - Add float log function and merge with existing base 2 integer implementation. See https://github.com/tiehuis/zig-fmath. See #374.
2017-06-16 20:26:10 +12:00
}
workaround for llvm bug See #393 for details
2017-06-19 14:36:33 -04:00
test "math.signbit64" {
std: update usage of std.testing
2021-05-04 20:47:26 +03:00
try expect(!signbit64(4.0));
try expect(signbit64(-3.0));
Add math library This covers the majority of the functions as covered by the C99 specification for a math library. Code is adapted primarily from musl libc, with the pow and standard trigonometric functions adapted from the Go stdlib. Changes: - Remove assert expose in index and import as needed. - Add float log function and merge with existing base 2 integer implementation. See https://github.com/tiehuis/zig-fmath. See #374.
2017-06-16 20:26:10 +12:00
}
std: Implement signbit for f128
2021-03-23 09:17:57 +01:00
test "math.signbit128" {
std: update usage of std.testing
2021-05-04 20:47:26 +03:00
try expect(!signbit128(4.0));
try expect(signbit128(-3.0));
std: Implement signbit for f128
2021-03-23 09:17:57 +01:00
}
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