Files
Sprinter-SDCC/examples/ptime/ptime.c
T
snark13 c71e249a4e Add full compiler toolchain, libc, examples and reference docs
First substantive commit: the entire Sprinter C compiler tree on top of
the bare README+gitignore initial commit.

What's in here:
  bin/sprinter-cc        — driver script invoking SDCC + linker + mkexe
  libc/                  — Sprinter-specific libc layer over ESTEX/BIOS
                           (conio, gfx, io, mem, stdio + headers)
  runtime/               — crt0 variants (default/small/banked/minimal)
                           + heap + bank trampolines
  toolchain/             — mkexe (SprintEXE packer, C + tests)
  examples/              — 30 demo programs (gfx, file I/O, env, time, …)
  lib/Makefile           — builds the libc archive (sprinter.lib)
  docs/                  — converted Sprinter manuals + asm reference samples
  third_party/           — solid-c reference compiler dump + sdcc setup script
  release_docs/          — packaging / release notes

gitignore overhaul:
  • Drop dangerous blanket patterns: *.asm (would hide docs/samples/*.asm)
    and *.exe (case-insensitive match was hiding third_party/solid-c/*.EXE
    on macOS APFS).  Replaced with examples/*/*.{asm,exe,…} and lib/*.lib.
  • Restore tracking of toolchain/mkexe/tests/{one,big}.bin — those are
    INPUT fixtures, not build outputs.
  • Collapse the duplicated SDCC/C/Sdcc sections into one section per
    concern (build outputs / vendored / OS-junk).
  • Add .sprinter-cc-*/, build/ (catches lib/build/ too), .claude/.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-06-03 16:13:21 +03:00

45 lines
1.3 KiB
C

/*
* ptime — exercise POSIX <time.h>. All wired through SDCC's z80.lib
* time.rel which calls our RtcRead() (bridged to ESTEX SYSTIME).
*/
#include <stdio.h>
#include <time.h>
int main(void)
{
/* time() returns seconds since 1970-01-01 (Unix epoch). */
time_t now;
time(&now);
printf("time() = %lu epoch seconds\n", now);
/* localtime() decomposes into struct tm. */
struct tm *lt = localtime(&now);
printf("localtime() = %04d-%02d-%02d %02d:%02d:%02d (wday=%u)\n",
lt->tm_year + 1900,
lt->tm_mon + 1,
lt->tm_mday,
lt->tm_hour,
lt->tm_min,
lt->tm_sec,
(unsigned)lt->tm_wday);
/* asctime() formats it as a 25-char string. */
printf("asctime() = %s", asctime(lt)); /* asctime adds \n */
/* mktime() round-trip — should recover the same epoch. */
time_t round = mktime(lt);
printf("mktime() = %lu (round-trip %s original)\n",
round, (round == now ? "==" : "!="));
/* Native datetime_t API still works alongside. */
datetime_t dt;
getdatetime(&dt);
printf("native = %04u-%02u-%02u %02u:%02u:%02u (dow=%u)\n",
dt.year, dt.month, dt.day,
dt.hour, dt.minute, dt.second,
(unsigned)dt.dow);
return 0;
}