cosmopolitan/libc/fmt/conv.h

#ifndef COSMOPOLITAN_LIBC_FMT_CONV_H_
#define COSMOPOLITAN_LIBC_FMT_CONV_H_
#include "libc/calls/struct/timespec.h"
#include "libc/calls/struct/timeval.h"
#include "libc/nt/struct/filetime.h"

/*───────────────────────────────────────────────────────────────────────────│─╗
│ cosmopolitan § conversion                                                ─╬─│┼
╚────────────────────────────────────────────────────────────────────────────│*/

#define MODERNITYSECONDS 11644473600ull
#define HECTONANOSECONDS 10000000ull

#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_

int abs(int) libcesque pureconst;
long labs(long) libcesque pureconst;
long long llabs(long long) libcesque pureconst;
intmax_t imaxabs(intmax_t) libcesque pureconst;
int atoi(const char *) paramsnonnull() libcesque;
long atol(const char *) paramsnonnull() libcesque;
long long atoll(const char *) paramsnonnull() libcesque;
unsigned long strtoul(const char *, char **, int) paramsnonnull((1));
long long strtoll(const char *, char **, int) paramsnonnull((1));
unsigned long long strtoull(const char *, char **, int) paramsnonnull((1));
long long strtonum(const char *, long long, long long, const char **);
intmax_t strtoimax(const char *, char **, int) paramsnonnull((1));
uintmax_t strtoumax(const char *, char **, int) paramsnonnull((1));
intmax_t wcstoimax(const wchar_t *, wchar_t **, int);
uintmax_t wcstoumax(const wchar_t *, wchar_t **, int);
long wcstol(const wchar_t *, wchar_t **, int);
unsigned long wcstoul(const wchar_t *, wchar_t **, int);
long strtol(const char *, char **, int) paramsnonnull((1)) libcesque;
long sizetol(const char *, long) paramsnonnull() libcesque;
char *sizefmt(char *, uint64_t, uint64_t);
long long wcstoll(const wchar_t *, wchar_t **, int);
unsigned long long wcstoull(const wchar_t *, wchar_t **, int);
int wcscoll(const wchar_t *, const wchar_t *);
size_t wcsxfrm(wchar_t *, const wchar_t *, size_t);

/*───────────────────────────────────────────────────────────────────────────│─╗
│ cosmopolitan § conversion » time                                         ─╬─│┼
╚────────────────────────────────────────────────────────────────────────────│*/

struct timeval _timespec2timeval(struct timespec);
int64_t DosDateTimeToUnix(unsigned, unsigned) libcesque nosideeffect;
struct timeval WindowsTimeToTimeVal(int64_t) libcesque nosideeffect;
struct timespec WindowsTimeToTimeSpec(int64_t) libcesque nosideeffect;
int64_t TimeSpecToWindowsTime(struct timespec) libcesque nosideeffect;
int64_t TimeValToWindowsTime(struct timeval) libcesque nosideeffect;
struct timeval WindowsDurationToTimeVal(int64_t) libcesque nosideeffect;
struct timespec WindowsDurationToTimeSpec(int64_t) libcesque nosideeffect;

#define MakeFileTime(x)                                        \
  ({                                                           \
    int64_t __x = x;                                           \
    (struct NtFileTime){(uint32_t)__x, (uint32_t)(__x >> 32)}; \
  })

#define ReadFileTime(t)                     \
  ({                                        \
    struct NtFileTime __t = t;              \
    uint64_t x = __t.dwHighDateTime;        \
    (int64_t)(x << 32 | __t.dwLowDateTime); \
  })

#define FileTimeToTimeSpec(x) WindowsTimeToTimeSpec(ReadFileTime(x))
#define FileTimeToTimeVal(x)  WindowsTimeToTimeVal(ReadFileTime(x))
#define TimeSpecToFileTime(x) MakeFileTime(TimeSpecToWindowsTime(x))
#define TimeValToFileTime(x)  MakeFileTime(TimeValToWindowsTime(x))

/*───────────────────────────────────────────────────────────────────────────│─╗
│ cosmopolitan § conversion » manipulation                                 ─╬─│┼
╚────────────────────────────────────────────────────────────────────────────│*/

char *dirname(char *);
char *basename(char *);
char *stripext(char *);
char *stripexts(char *);

/*───────────────────────────────────────────────────────────────────────────│─╗
│ cosmopolitan § conversion » computation                                  ─╬─│┼
╚────────────────────────────────────────────────────────────────────────────│*/

typedef struct {
  int quot;
  int rem;
} div_t;

typedef struct {
  long int quot;
  long int rem;
} ldiv_t;

typedef struct {
  long long int quot;
  long long int rem;
} lldiv_t;

typedef struct {
  intmax_t quot;
  intmax_t rem;
} imaxdiv_t;

div_t div(int, int) pureconst;
ldiv_t ldiv(long, long) pureconst;
lldiv_t lldiv(long long, long long) pureconst;
imaxdiv_t imaxdiv(intmax_t, intmax_t) pureconst;

/*───────────────────────────────────────────────────────────────────────────│─╗
│ cosmopolitan § conversion » optimizations                                ─╬─│┼
╚────────────────────────────────────────────────────────────────────────────│*/

#if __STDC_VERSION__ + 0 >= 199901L
#define div(num, den)   ((div_t){(num) / (den), (num) % (den)})
#define ldiv(num, den)  ((ldiv_t){(num) / (den), (num) % (den)})
#define lldiv(num, den) ((lldiv_t){(num) / (den), (num) % (den)})
#endif

#if (__GNUC__ * 100 + __GNUC_MINOR__ >= 406 || defined(__llvm__)) && \
    !defined(__STRICT_ANSI__)
int128_t i128abs(int128_t) libcesque pureconst;
int128_t strtoi128(const char *, char **, int) paramsnonnull((1));
uint128_t strtou128(const char *, char **, int) paramsnonnull((1));
int128_t wcstoi128(const wchar_t *, wchar_t **, int);
uint128_t wcstou128(const wchar_t *, wchar_t **, int);
#endif /* gcc 4.6+ */

COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_FMT_CONV_H_ */