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/* See LICENSE file for copyright and license details. */
/**
* Calculates the sum of two `struct timespec`s
*
* @param sum Output parameter for the result
* @param augend One of the terms
* @param addend The other term
* @return 0 on success, -1 on failure
* @throws ERANGE The result is too large or too small to be store; the result
* will be `{.tv_sec = TIME_MAX, .tv_nsec = 999999999L}` if the
* result too large and `{.tv_sec = TIME_MIN, .tv_nsec = 0L}`
* if the result too small
*/
_LIBSIMPLE_GCC_ONLY(__attribute__((__nonnull__)))
int libsimple_sumtimespec(struct timespec *, const struct timespec *, const struct timespec *);
#ifndef sumtimespec
# define sumtimespec libsimple_sumtimespec
#endif
/**
* Calculates the difference of two `struct timespec`s
*
* @param diff Output parameter for the result
* @param minuend The left-hand term
* @param subtrahend The right-hand term
* @return 0 on success, -1 on failure
* @throws ERANGE The result is too large or too small to be store; the result
* will be `{.tv_sec = TIME_MAX, .tv_nsec = 999999999L}` if the
* result too large and `{.tv_sec = TIME_MIN, .tv_nsec = 0L}`
* if the result too small
*/
_LIBSIMPLE_GCC_ONLY(__attribute__((__nonnull__)))
int libsimple_difftimespec(struct timespec *, const struct timespec *, const struct timespec *);
#ifndef difftimespec
# define difftimespec libsimple_difftimespec
#endif
/**
* Calculates the product of a `struct timespec` and an integer
*
* @param prod Output parameter for the result
* @param multiplicand One of the factors
* @param multiplier The other factor
* @return 0 on success, -1 on failure
* @throws ERANGE The result is too large or too small to be store; the result
* will be `{.tv_sec = TIME_MAX, .tv_nsec = 999999999L}` if the
* result too large and `{.tv_sec = TIME_MIN, .tv_nsec = 0L}`
* if the result too small
*/
_LIBSIMPLE_GCC_ONLY(__attribute__((__nonnull__)))
int libsimple_multimespec(struct timespec *, const struct timespec *, int);
#ifndef multimespec
# define multimespec libsimple_multimespec
#endif
/**
* Compares two `struct timespec`s
*
* @param a One of the `struct timespec`s
* @param b The other `struct timespec`
* @return -1 if `a` < `b`, 0 if `a` = `b`, and +1 if `a` > `b`
*/
_LIBSIMPLE_GCC_ONLY(__attribute__((__nonnull__, __warn_unused_result__)))
static inline int
libsimple_cmptimespec(const struct timespec *__a, const struct timespec *__b)
{
if (__a->tv_sec != __b->tv_sec)
return __a->tv_sec < __b->tv_sec ? -1 : +1;
return __a->tv_nsec < __b->tv_nsec ? -1 : __a->tv_nsec > __b->tv_nsec;
}
#ifndef cmptimespec
# define cmptimespec libsimple_cmptimespec
#endif
/**
* Calculates the sum of two `struct timeval`s
*
* @param sum Output parameter for the result
* @param augend One of the terms
* @param addend The other term
* @return 0 on success, -1 on failure
* @throws ERANGE The result is too large or too small to be store; the result
* will be `{.tv_sec = TIME_MAX, .tv_usec = 999999L}` if the
* result too large and `{.tv_sec = TIME_MIN, .tv_usec = 0L}`
* if the result too small
*/
_LIBSIMPLE_GCC_ONLY(__attribute__((__nonnull__)))
int libsimple_sumtimeval(struct timeval *, const struct timeval *, const struct timeval *);
#ifndef sumtimeval
# define sumtimeval libsimple_sumtimeval
#endif
/**
* Calculates the difference of two `struct timeval`s
*
* @param diff Output parameter for the result
* @param minuend The left-hand term
* @param subtrahend The right-hand term
* @return 0 on success, -1 on failure
* @throws ERANGE The result is too large or too small to be store; the result
* will be `{.tv_sec = TIME_MAX, .tv_usec = 999999L}` if the
* result too large and `{.tv_sec = TIME_MIN, .tv_usec = 0L}`
* if the result too small
*/
_LIBSIMPLE_GCC_ONLY(__attribute__((__nonnull__)))
int libsimple_difftimeval(struct timeval *, const struct timeval *, const struct timeval *);
#ifndef difftimeval
# define difftimeval libsimple_difftimeval
#endif
/**
* Calculates the product of a `struct timeval` and an integer
*
* @param prod Output parameter for the result
* @param multiplicand One of the factors
* @param multiplier The other factor
* @return 0 on success, -1 on failure
* @throws ERANGE The result is too large or too small to be store; the result
* will be `{.tv_sec = TIME_MAX, .tv_usec = 999999L}` if the
* result too large and `{.tv_sec = TIME_MIN, .tv_usec = 0L}`
* if the result too small
*/
_LIBSIMPLE_GCC_ONLY(__attribute__((__nonnull__)))
int libsimple_multimeval(struct timeval *, const struct timeval *, int);
#ifndef multimeval
# define multimeval libsimple_multimeval
#endif
/**
* Compares two `struct timeval`s
*
* @param a One of the `struct timeval`s
* @param b The other `struct timeval`
* @return -1 if `a` < `b`, 0 if `a` = `b`, and +1 if `a` > `b`
*/
_LIBSIMPLE_GCC_ONLY(__attribute__((__nonnull__, __warn_unused_result__)))
static inline int
libsimple_cmptimeval(const struct timeval *__a, const struct timeval *__b)
{
if (__a->tv_sec != __b->tv_sec)
return __a->tv_sec < __b->tv_sec ? -1 : +1;
return __a->tv_usec < __b->tv_usec ? -1 : __a->tv_usec > __b->tv_usec;
}
#ifndef cmptimeval
# define cmptimeval libsimple_cmptimeval
#endif
/**
* Converts a `struct timeval` to a `struct timespec`
*
* @param ts Output parameter for the result
* @param tv The value to convert
*/
_LIBSIMPLE_GCC_ONLY(__attribute__((__nonnull__)))
static inline void
libsimple_timeval2timespec(struct timespec *restrict __ts, const struct timeval *restrict __tv)
{
__ts->tv_sec = __tv->tv_sec;
__ts->tv_nsec = __tv->tv_usec;
__ts->tv_nsec *= 1000L;
}
#ifndef timeval2timespec
# define timeval2timespec libsimple_timeval2timespec
#endif
/**
* Converts a `struct timespec` to a `struct timeval`
*
* @param tv The value to convert
* @param ts Output parameter for the result
* @return 0 on success, -1 on error
* @throws EOVERFLOW The value is too large to be convert, the value will be
* truncated to `{.tv_sec = TIME_MAX, .tv_usec = 999999L}`
*/
_LIBSIMPLE_GCC_ONLY(__attribute__((__nonnull__)))
int libsimple_timespec2timeval(struct timeval *restrict, const struct timespec *restrict);
#ifndef timespec2timeval
# define timespec2timeval libsimple_timespec2timeval
#endif
/**
* Converts a string to `struct timespec`
*
* Repeating decimal are supported ith the repetend inside
* round brackets or after an additional point, for example
* "0.1(6)" or "0.1.6" for one sixth
*
* @param ts Output parameter for the result
* @param s The string to parse
* @param end Output parameter for where the parsing stopped;
* will only be set on success or on ERANGE error
* @return 0 on success, -1 on error
* @throws EINVAL The input string is invalid (`*end` is not set)
* @throws ERANGE The result is too large or too small to be store; the result
* will be `{.tv_sec = TIME_MAX, .tv_nsec = 999999999L}` if the
* result too large and `{.tv_sec = TIME_MIN, .tv_nsec = 0L}`
* if the result too small (`*end` is set)
*/
_LIBSIMPLE_GCC_ONLY(__attribute__((__nonnull__(1, 2))))
int libsimple_strtotimespec(struct timespec *restrict, const char *restrict, char **restrict);
#ifndef strtotimespec
# define strtotimespec libsimple_strtotimespec
#endif
/**
* Converts a string to `struct timeval`
*
* Repeating decimal are supported ith the repetend inside
* round brackets or after an additional point, for example
* "0.1(6)" or "0.1.6" for one sixth
*
* @param tv Output parameter for the result
* @param s The string to parse
* @param end Output parameter for where the parsing stopped;
* will only be set on success or on ERANGE error
* @return 0 on success, -1 on error
* @throws EINVAL The input string is invalid (`*end` is not set)
* @throws ERANGE The result is too large or too small to be store; the result
* will be `{.tv_sec = TIME_MAX, .tv_usec = 999999L}` if the
* result too large and `{.tv_sec = TIME_MIN, .tv_usec = 0L}`
* if the result too small (`*end` is set)
*/
_LIBSIMPLE_GCC_ONLY(__attribute__((__nonnull__(1, 2))))
int libsimple_strtotimeval(struct timeval *restrict, const char *restrict, char **restrict);
#ifndef strtotimeval
# define strtotimeval libsimple_strtotimeval
#endif
/**
* Converts a `struct timespec` to string
*
* The output will always have a sign ("+" or "-") and 9 decimals.
*
* @param buf Output buffer to use, if `NULL` a new buffer will be allocated
* @param ts The value to convert
* @return The result (same pointer as `buf` unless `buf == NULL`),
* `NULL` on failure
* @throws ENOMEM Output buffer could not be allocated (only if `buf == NULL`)
* @throws EINVAL `ts->tv_nsec` is negative or greater than 999999999
*/
_LIBSIMPLE_GCC_ONLY(__attribute__((__nonnull__(2))))
char *libsimple_timespectostr(char *restrict, const struct timespec *restrict);
#ifndef timespectostr
# define timespectostr libsimple_timespectostr
#endif
/**
* Converts a `struct timeval` to string
*
* The output will always have a sign ("+" or "-") and 6 decimals.
*
* @param buf Output buffer to use, if `NULL` a new buffer will be allocated
* @param tv The value to convert
* @return The result (same pointer as `buf` unless `buf == NULL`),
* `NULL` on failure
* @throws ENOMEM Output buffer could not be allocated (only if `buf == NULL`)
* @throws EINVAL `ts->tv_usec` is negative or greater than 999999
*/
_LIBSIMPLE_GCC_ONLY(__attribute__((__nonnull__(2))))
char *libsimple_timevaltostr(char *restrict, const struct timeval *restrict);
#ifndef timevaltostr
# define timevaltostr libsimple_timevaltostr
#endif
/**
* Converts a `struct timespec` to `double`
*
* @param ts The value to convert
* @return The result
*/
_LIBSIMPLE_GCC_ONLY(__attribute__((__nonnull__)))
static inline double
libsimple_timespectodouble(const struct timespec *__ts)
{
double __ret = (double)(__ts->tv_nsec);
__ret /= (double)1000000000L;
__ret += (double)(__ts->tv_sec);
return __ret;
}
#ifndef timespectodouble
# define timespectodouble libsimple_timespectodouble
#endif
/**
* Converts a `struct timeval` to `double`
*
* @param tv The value to convert
* @return The result
*/
_LIBSIMPLE_GCC_ONLY(__attribute__((__nonnull__)))
static inline double
libsimple_timevaltodouble(const struct timeval *__tv)
{
double __ret = (double)(__tv->tv_usec);
__ret /= (double)1000000L;
__ret += (double)(__tv->tv_sec);
return __ret;
}
#ifndef timevaltodouble
# define timevaltodouble libsimple_timevaltodouble
#endif
/**
* Converts a double to `struct timespec`
*
* No overflow check is made
*
* @param ts Output parameter for the result
* @param d The value to convert
*/
_LIBSIMPLE_GCC_ONLY(__attribute__((__nonnull__)))
void libsimple_doubletotimespec(struct timespec *, double);
#ifndef doubletotimespec
# define doubletotimespec libsimple_doubletotimespec
#endif
/**
* Converts a double to `struct timeval`
*
* No overflow check is made
*
* @param tv Output parameter for the result
* @param d The value to convert
*/
_LIBSIMPLE_GCC_ONLY(__attribute__((__nonnull__)))
void libsimple_doubletotimeval(struct timeval *, double);
#ifndef doubletotimeval
# define doubletotimeval libsimple_doubletotimeval
#endif
/**
* Minimises a numerical string
*
* This function does not support repeating decimals
*
* @param s The string to minimise
* @return `s`
*/
_LIBSIMPLE_GCC_ONLY(__attribute__((__returns_nonnull__, __nonnull__)))
char *libsimple_minimise_number_string(char *);
#ifndef minimise_number_string
# define minimise_number_string libsimple_minimise_number_string
#endif
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