aboutsummaryrefslogtreecommitdiff
path: root/std/rand
AgeCommit message (Collapse)Author
2019-09-25mv std/ lib/Andrew Kelley
that's all this commit does. further commits will fix cli flags and such. see #2221
2019-03-02rename std lib files to new conventionAndrew Kelley
2019-02-08std.debug.assert: remove special case for test buildsAndrew Kelley
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
2018-12-12breaking API changes to all readInt/writeInt functions & moreAndrew Kelley
* add `@bswap` builtin function. See #767 * comptime evaluation facilities are improved to be able to handle a `@ptrCast` with a backing array. * `@truncate` allows "truncating" a u0 value to any integer type, and the result is always comptime known to be `0`. * when specifying pointer alignment in a type expression, the alignment value of pointers which do not have addresses at runtime is ignored, and always has the default/ABI alignment * threw in a fix to freebsd/x86_64.zig to update syntax from language changes * some improvements are pending #863 closes #638 closes #1733 std lib API changes * io.InStream().readIntNe renamed to readIntNative * io.InStream().readIntLe renamed to readIntLittle * io.InStream().readIntBe renamed to readIntBig * introduced io.InStream().readIntForeign * io.InStream().readInt has parameter order changed * io.InStream().readVarInt has parameter order changed * io.InStream().writeIntNe renamed to writeIntNative * introduced io.InStream().writeIntForeign * io.InStream().writeIntLe renamed to writeIntLittle * io.InStream().writeIntBe renamed to writeIntBig * io.InStream().writeInt has parameter order changed * mem.readInt has different parameters and semantics * introduced mem.readIntNative * introduced mem.readIntForeign * mem.readIntBE renamed to mem.readIntBig and different API * mem.readIntLE renamed to mem.readIntLittle and different API * introduced mem.readIntSliceNative * introduced mem.readIntSliceForeign * introduced mem.readIntSliceLittle * introduced mem.readIntSliceBig * introduced mem.readIntSlice * mem.writeInt has different parameters and semantics * introduced mem.writeIntNative * introduced mem.writeIntForeign * mem.writeIntBE renamed to mem.readIntBig and different semantics * mem.writeIntLE renamed to mem.readIntLittle and different semantics * introduced mem.writeIntSliceForeign * introduced mem.writeIntSliceNative * introduced mem.writeIntSliceBig * introduced mem.writeIntSliceLittle * introduced mem.writeIntSlice * removed mem.endianSwapIfLe * removed mem.endianSwapIfBe * removed mem.endianSwapIf * added mem.littleToNative * added mem.bigToNative * added mem.toNative * added mem.nativeTo * added mem.nativeToLittle * added mem.nativeToBig
2018-11-24factor out and expose biased range limiting functionJosh Wolfe
2018-11-24test lots of typesJosh Wolfe
2018-11-24add biased random range apiJosh Wolfe
2018-11-24better debiased random range implementationJosh Wolfe
2018-11-19std/rand: fix ziggurat next_f64 callMarc Tiehuis
2018-11-13New Zig formal grammar (#1685)Jimmi Holst Christensen
Reverted #1628 and changed the grammar+parser of the language to not allow certain expr where types are expected
2018-10-26remove @minValue,@maxValue; add std.math.minInt,maxIntAndrew Kelley
closes #1466 closes #1476
2018-10-15Solve the return type ambiguity (#1628)Jimmi Holst Christensen
Changed container and initializer syntax * <container> { ... } -> <container> . { ... } * <exrp> { ... } -> <expr> . { ...}
2018-09-27overhaul api for getting random integers (#1578)Josh Wolfe
* rand api overhaul * no retry limits. instead documented a recommendation to call int(T) % len directly.
2018-08-03Fix the start-less-than-end assertion in std.rand.Random.range (#1325)Matthew D. Steele
The function returns a value in [start, end), but was asserting start <= end instead of start < end. With this fix, range(1, 1) will now assertion error instead of dividing by zero.
2018-06-27Fix up some std.rand syntax #1161 (#1162)tgschultz
* Fix old syntax in rand Ziggurat somehow did not get updated to latest syntax * Fix broken float casts f32 float casts somehow not updated to latest syntax
2018-06-17remove integer and float casting syntaxAndrew Kelley
* add `@intCast` * add `@floatCast` * add `@floatToInt` * add `@intToFloat` See #1061
2018-05-31use * for pointer type instead of &Andrew Kelley
See #770 To help automatically translate code, see the zig-fmt-pointer-reform-2 branch. This will convert all & into *. Due to the syntax ambiguity (which is why we are making this change), even address-of & will turn into *, so you'll have to manually fix thes instances. You will be guaranteed to get compile errors for them - expected 'type', found 'foo'
2018-05-30run zig fmt on the codebaseAndrew Kelley
2018-05-29run zig fmt on the codebaseAndrew Kelley
See #1003
2018-04-16Add exp/norm distributed random float generationMarc Tiehuis
2018-03-29fix examples and rename std.rand.Rand to std.rand.RandomAndrew Kelley
2018-03-30Rewrite Rand functionsMarc Tiehuis
We now use a generic Rand structure which abstracts the core functions from the backing engine. The old Mersenne Twister engine is removed and replaced instead with three alternatives: - Pcg32 - Xoroshiro128+ - Isaac64 These should provide sufficient coverage for most purposes, including a CSPRNG using Isaac64. Consumers of the library that do not care about the actual engine implementation should use DefaultPrng and DefaultCsprng.