stdc 1.0.8

A minimal-abstraction Standard C Library implementation for Dart. Designed for C programmers to seamlessly use familiar functions like stdc.printf or stdc.sin.

1.0.8 May 9th 2026

• Wide Character and Localization Support: Completed text handling capabilities by implementing C95/C99 wide character features and system localization stubs (<locale.h>, <wchar.h>, <wctype.h>).
• <locale.h> Addition: Provided the Lconv class (mapping to struct lconv) populated with standard "C" locale defaults. Added setlocale and localeconv functions, along with localization category macros (LC_ALL, LC_CTYPE, etc.).
• <wchar.h> Addition: Introduced wchar_t and wint_t definitions mapping to Dart int (Runes), adhering to a strict C-like memory representation for wide strings (List<wchar_t>). Implemented wide string manipulation functions (wcslen, wcscpy, wcscmp, wcscat, wcschr, wcsstr).
• <wctype.h> Addition: Added wide character classification and mapping functions (iswalpha, iswdigit, towlower, towupper, etc.) natively supporting standard integer-based code unit evaluation.
• Documentation & Linting Polish: Added missing API documentation comments across public symbols (including complex and inttypes extensions) to ensure comprehensive documentation coverage. Intentionally silenced camel_case_types warnings for C-style type definitions (like wchar_t and wint_t) to maintain authentic C naming conventions while preserving pub.dev score.

1.0.7 May 8th 2026

• Complex Mathematics, Extended Integers, and Unicode Support: Expanded the library's domain to cover C99 and C11 specialized headers (<complex.h>, <inttypes.h>, <uchar.h>).
• <complex.h> Addition: Provided complex, double complex, and float complex type definitions. Implemented core complex arithmetic and transcendental functions (cabs, cacos, casin, catan, ccos, csin, ctan, cexp, clog, cpow, csqrt) via a zero-overhead architecture.
• <inttypes.h> Addition: Introduced extended integer utilities, directly building upon <stdint.h>. Added imaxabs, imaxdiv, strtoimax, and strtoumax functions for working with maximum-width integer types seamlessly.
• <uchar.h> Addition: Provided C11 Unicode type definitions (char16_t, char32_t) and implemented standard conversion functions (mbrtoc16, c16rtomb, mbrtoc32, c32rtomb), mapping directly to Dart's highly optimized UTF-16 strings and runes.

1.0.6 May 7th 2026

• Standard Type Definitions & Constraints Expansion: Added standard C integer bounds, boolean utilities, and pointer type definitions (<stdint.h>, <stdbool.h>, <stddef.h>).
• <stdint.h> Addition: Provided extension type strict definitions for native C-like integers (Int8, Uint32, etc.) matching standard C widths without sacrificing zero-overhead performance. Also provided fast typedef alias options (int8_t, uint32_t).
• <stdbool.h> Addition: Implemented <stdbool.h> equivalents. Introduced quality-of-life bool extension utilities (e.g., Toggle(), ToInt()). Note: All non-standard derived utility methods begin with an Uppercase letter to cleanly distinguish them from standard APIs.
• <stddef.h> Addition: Provided size_t and ptrdiff_t aliases, alongside stdc.NULL mapping to Dart's null.
• Web/Wasm Compatibility: Refactored <stdio.h> to decouple it from dart:io. Implemented conditional imports (src/io_stub.dart and src/io_native.dart) to ensure the entire stdc package compiles and runs flawlessly on Web and Wasm targets, automatically falling back to print() for console output on the web.

1.0.5 May 6th 2026

• Essential Systems Boundaries & Diagnostics: Expanded stdc with core limit definitions, floating-point characteristics, and system diagnostics headers.
• <limits.h> Addition: Provided constants for standard C integer limits (INT_MAX, UINT_MAX, CHAR_BIT, etc.), mapped to traditional C 32-bit bounds for int and 64-bit for long long.
• <float.h> Addition: Provided standard C floating-point characteristics (FLT_MAX, DBL_MAX, FLT_EPSILON, etc.).
• <assert.h> Addition: Implemented runtime assertions. Due to assert being a reserved keyword in Dart, the function is implemented as stdc.assert_() or stdc.cassert(), but documented as the C-equivalent assert.
• <errno.h> Addition: Added global error state tracking (stdc.errno) and standard error macros (EDOM, ERANGE, etc.) to support C-style error reporting.

1.0.4

• Massive Systems-Level Feature Expansion: Added support for three core C standard headers simultaneously (<stdlib.h>, <stdio.h>, <time.h>), significantly expanding the library's utility for C programmers seeking a zero-abstraction environment in Dart.
• <stdlib.h> Addition: Implemented essential standard library utilities mapping directly to native-equivalent concepts:
  • String conversions: atoi, atol, atof.
  • Pseudo-random number generation: rand, srand.
  • Integer arithmetic: abs, labs, llabs.
  • Searching and sorting: qsort, bsearch (designed to use pure Dart's optimized algorithms while exposing the familiar C signatures with comparators).
• <stdio.h> Addition: Brought raw, authentic C-style I/O to Dart using direct dart:io hooks where appropriate:
  • Formatted I/O: Added a lightweight, zero-dependency sprintf and printf implementation that mimics C's format specifiers (%d, %s, %f, %x, etc.) without bloating the library.
  • Character and String Output: puts, putchar.
  • Standard Input: getchar, gets.
• <time.h> Addition: Implemented low-level time tracking utilities mapping to system ticks and epochs:
  • Core timing: time, clock.
  • Utility functions: difftime, ctime.

1.0.3

• <string.h> Addition: Implemented standard C string manipulation functions (strlen, strcmp, strcpy, strcat, strstr, etc.). Mutating functions like strcpy and strcat have been adapted to return a new string, adhering to Dart's immutable String nature while maintaining familiar C naming conventions.

1.0.2

• <ctype.h> Addition: Implemented standard character classification and conversion functions (isalpha, isdigit, toupper, tolower, etc.). Designed to accept String inputs for ergonomic use in Dart while maintaining native performance.

1.0.1

• Version Reset: Reset versioning to 0.1.0 to properly track early development of the library before a stable 1.0.0 release.
• Initial Architecture Setup: Implemented the core Stdc extension architecture, allowing a unified stdc namespace across different headers.
• <math.h> Implemented: Added comprehensive support for C standard math functions (sin, cos, sqrt, pow, ceil, floor, abs, fabs, etc.) mapped to Dart's highly optimized dart:math.
• Examples & Tests: Created example/stdc_example.dart and test/stdc_test.dart.
• Documentation: Added comprehensive API dartdoc comments to all functions, classes, and constants.

1.0.0

• Initial placeholder version from Dart template creation.