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zig/std/special/compiler_rt
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Wink Saville 634d11ab28 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.
2018-12-12 00:21:42 -05:00
..
aulldiv.zig syntax: functions require return type. remove -> 2018-01-25 04:10:11 -05:00
aullrem.zig syntax: functions require return type. remove -> 2018-01-25 04:10:11 -05:00
comparetf2.zig Clean up outstanding compiler_rt todos 2018-07-03 13:22:12 +12:00
divti3_test.zig Add i128 compiler-rt div/mul support 2018-06-13 22:25:04 +12:00
divti3.zig remove integer and float casting syntax 2018-06-17 02:57:07 -04:00
extendXfYf2_test.zig zig fmt 2018-07-09 01:23:47 -04:00
extendXfYf2.zig add f16 type 2018-06-27 16:20:04 +02:00
fixdfdi_test.zig Add add compiler_rt routines for float to signed integer conversion 2018-12-12 00:21:42 -05:00
fixdfdi.zig Add add compiler_rt routines for float to signed integer conversion 2018-12-12 00:21:42 -05:00
fixdfsi_test.zig Add add compiler_rt routines for float to signed integer conversion 2018-12-12 00:21:42 -05:00
fixdfsi.zig Add add compiler_rt routines for float to signed integer conversion 2018-12-12 00:21:42 -05:00
fixdfti_test.zig Add add compiler_rt routines for float to signed integer conversion 2018-12-12 00:21:42 -05:00
fixdfti.zig Add add compiler_rt routines for float to signed integer conversion 2018-12-12 00:21:42 -05:00
fixint_test.zig Add add compiler_rt routines for float to signed integer conversion 2018-12-12 00:21:42 -05:00
fixint.zig Add add compiler_rt routines for float to signed integer conversion 2018-12-12 00:21:42 -05:00
fixsfdi_test.zig Add add compiler_rt routines for float to signed integer conversion 2018-12-12 00:21:42 -05:00
fixsfdi.zig Add add compiler_rt routines for float to signed integer conversion 2018-12-12 00:21:42 -05:00
fixsfsi_test.zig Add add compiler_rt routines for float to signed integer conversion 2018-12-12 00:21:42 -05:00
fixsfsi.zig Add add compiler_rt routines for float to signed integer conversion 2018-12-12 00:21:42 -05:00
fixsfti_test.zig Add add compiler_rt routines for float to signed integer conversion 2018-12-12 00:21:42 -05:00
fixsfti.zig Add add compiler_rt routines for float to signed integer conversion 2018-12-12 00:21:42 -05:00
fixtfdi_test.zig Add add compiler_rt routines for float to signed integer conversion 2018-12-12 00:21:42 -05:00
fixtfdi.zig Add add compiler_rt routines for float to signed integer conversion 2018-12-12 00:21:42 -05:00
fixtfsi_test.zig Add add compiler_rt routines for float to signed integer conversion 2018-12-12 00:21:42 -05:00
fixtfsi.zig Add add compiler_rt routines for float to signed integer conversion 2018-12-12 00:21:42 -05:00
fixtfti_test.zig Add add compiler_rt routines for float to signed integer conversion 2018-12-12 00:21:42 -05:00
fixtfti.zig Add add compiler_rt routines for float to signed integer conversion 2018-12-12 00:21:42 -05:00
fixuint.zig Clean up outstanding compiler_rt todos 2018-07-03 13:22:12 +12:00
fixunsdfdi_test.zig fix compiler-rt tests accidentally running std tests 2018-05-02 21:34:34 -04:00
fixunsdfdi.zig behavior tests passing with new pointer deref syntax 2018-05-01 01:53:04 -04:00
fixunsdfsi_test.zig fix compiler-rt tests accidentally running std tests 2018-05-02 21:34:34 -04:00
fixunsdfsi.zig behavior tests passing with new pointer deref syntax 2018-05-01 01:53:04 -04:00
fixunsdfti_test.zig run zig fmt on the codebase 2018-05-29 04:23:38 -04:00
fixunsdfti.zig syntax: functions require return type. remove -> 2018-01-25 04:10:11 -05:00
fixunssfdi_test.zig fix compiler-rt tests accidentally running std tests 2018-05-02 21:34:34 -04:00
fixunssfdi.zig syntax: functions require return type. remove -> 2018-01-25 04:10:11 -05:00
fixunssfsi_test.zig fix compiler-rt tests accidentally running std tests 2018-05-02 21:34:34 -04:00
fixunssfsi.zig syntax: functions require return type. remove -> 2018-01-25 04:10:11 -05:00
fixunssfti_test.zig fix compiler-rt tests accidentally running std tests 2018-05-02 21:34:34 -04:00
fixunssfti.zig behavior tests passing with new pointer deref syntax 2018-05-01 01:53:04 -04:00
fixunstfdi_test.zig Clean up outstanding compiler_rt todos 2018-07-03 13:22:12 +12:00
fixunstfdi.zig syntax: functions require return type. remove -> 2018-01-25 04:10:11 -05:00
fixunstfsi_test.zig Clean up outstanding compiler_rt todos 2018-07-03 13:22:12 +12:00
fixunstfsi.zig syntax: functions require return type. remove -> 2018-01-25 04:10:11 -05:00
fixunstfti_test.zig fix compiler-rt tests accidentally running std tests 2018-05-02 21:34:34 -04:00
fixunstfti.zig behavior tests passing with new pointer deref syntax 2018-05-01 01:53:04 -04:00
floattidf_test.zig compiler_rt: Add floattitf/floattidf/floattisf 2018-06-30 21:58:59 +12:00
floattidf.zig remove @minValue,@maxValue; add std.math.minInt,maxInt 2018-10-26 15:01:51 -04:00
floattisf_test.zig compiler_rt: Add floattitf/floattidf/floattisf 2018-06-30 21:58:59 +12:00
floattisf.zig remove @minValue,@maxValue; add std.math.minInt,maxInt 2018-10-26 15:01:51 -04:00
floattitf_test.zig compiler_rt: Add floattitf/floattidf/floattisf 2018-06-30 21:58:59 +12:00
floattitf.zig remove @minValue,@maxValue; add std.math.minInt,maxInt 2018-10-26 15:01:51 -04:00
floatunditf_test.zig compiler_rt: Add floatunditf and floatunsitf 2018-06-30 21:58:59 +12:00
floatunditf.zig Alignment fix and allow rudimentary f128 float printing 2018-06-30 21:58:59 +12:00
floatunsitf_test.zig compiler_rt: Add floatunditf and floatunsitf 2018-06-30 21:58:59 +12:00
floatunsitf.zig Clean up outstanding compiler_rt todos 2018-07-03 13:22:12 +12:00
floatuntidf_test.zig @floatToInt now has safety-checked undefined behavior 2018-06-19 16:06:10 -04:00
floatuntidf.zig remove @minValue,@maxValue; add std.math.minInt,maxInt 2018-10-26 15:01:51 -04:00
floatuntisf_test.zig compiler_rt: Add floatuntisf 2018-06-30 21:58:59 +12:00
floatuntisf.zig remove @minValue,@maxValue; add std.math.minInt,maxInt 2018-10-26 15:01:51 -04:00
floatuntitf_test.zig compiler_rt: Add floatuntitf 2018-06-30 21:58:59 +12:00
floatuntitf.zig remove @minValue,@maxValue; add std.math.minInt,maxInt 2018-10-26 15:01:51 -04:00
index.zig Add add compiler_rt routines for float to signed integer conversion 2018-12-12 00:21:42 -05:00
muloti4_test.zig Add windows x86_64 i128 abi workaround 2018-06-14 21:18:36 +12:00
muloti4.zig Add windows x86_64 i128 abi workaround 2018-06-14 21:18:36 +12:00
multi3_test.zig Solve the return type ambiguity (#1628) 2018-10-15 09:51:15 -04:00
multi3.zig New Zig formal grammar (#1685) 2018-11-13 05:08:37 -08:00
README.md add compiler-rt fns: udivmodti4, udivti3, umodti3 2017-08-18 16:26:09 -04:00
truncXfYf2_test.zig compiler_rt: Add trunc f128 narrowing functions 2018-06-30 21:58:59 +12:00
truncXfYf2.zig compiler_rt: Add floatunditf and floatunsitf 2018-06-30 21:58:59 +12:00
udivmod.zig remove integer and float casting syntax 2018-06-17 02:57:07 -04:00
udivmoddi4_test.zig New Zig formal grammar (#1685) 2018-11-13 05:08:37 -08:00
udivmoddi4.zig use * for pointer type instead of & 2018-05-31 17:28:07 -04:00
udivmodti4_test.zig New Zig formal grammar (#1685) 2018-11-13 05:08:37 -08:00
udivmodti4.zig use * for pointer type instead of & 2018-05-31 17:28:07 -04:00
udivti3.zig use * for pointer type instead of & 2018-05-31 17:28:07 -04:00
umodti3.zig use * for pointer type instead of & 2018-05-31 17:28:07 -04:00

README.md

This compiler-rt library is ported from LLVM.

It's needed because LLVM emits library calls to compiler-rt when hardware lacks functionality, for example, 64-bit integer multiplication on 32-bit x86.

This library is automatically built as-needed for the compilation target and then statically linked and therefore is a transparent dependency for the programmer.

Any bugs should be solved by trying to duplicate the bug upstream.

  • If the bug exists upstream, get it fixed with the LLVM team and then port the fix downstream to Zig.
  • If the bug only exists in Zig, something went wrong porting the code, and you can run the C code and Zig code side by side in a debugger to figure out what's happening differently.