text: /*
   * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
   * All rights reserved.
   *
   * This source code is licensed under both the BSD-style license (found in the
   * LICENSE file in the root directory of this source tree) and the GPLv2 (found
   * in the COPYING file in the root directory of this source tree).
   * You may select, at your option, one of the above-listed licenses.
   */
  
  #ifndef TIME_FN_H_MODULE_287987
  #define TIME_FN_H_MODULE_287987
  
  #if defined (__cplusplus)
  extern "C" {
  #endif
  
  
  /*-****************************************
  *  Dependencies
  ******************************************/
  #include <sys/types.h>    /* utime */
  #if defined(_MSC_VER)
  #  include <sys/utime.h>  /* utime */
  #else
  #  include <utime.h>      /* utime */
  #endif
  #include <time.h>         /* clock_t, clock, CLOCKS_PER_SEC */
  
  
  
  /*-****************************************
  *  Local Types
  ******************************************/
  
  #if !defined (__VMS) && (defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) )
  # include <stdint.h>
    typedef uint64_t           PTime;  /* Precise Time */
  #else
    typedef unsigned long long PTime;  /* does not support compilers without long long support */
  #endif
  
  
  
  /*-****************************************
  *  Time functions
  ******************************************/
  #if defined(_WIN32)   /* Windows */
  
      #include <Windows.h>   /* LARGE_INTEGER */
      typedef LARGE_INTEGER UTIL_time_t;
      #define UTIL_TIME_INITIALIZER { { 0, 0 } }
  
  #elif defined(__APPLE__) && defined(__MACH__)
  
      #include <mach/mach_time.h>
      typedef PTime UTIL_time_t;
      #define UTIL_TIME_INITIALIZER 0
  
  #elif (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) /* C11 */) \
      && defined(TIME_UTC) /* C11 requires timespec_get, but FreeBSD 11 lacks it, while still claiming C11 compliance */
  
      typedef struct timespec UTIL_time_t;
      #define UTIL_TIME_INITIALIZER { 0, 0 }
  
  #else   /* relies on standard C90 (note : clock_t measurements can be wrong when using multi-threading) */
  
      typedef clock_t UTIL_time_t;
      #define UTIL_TIME_INITIALIZER 0
  
  #endif
  
  
  UTIL_time_t UTIL_getTime(void);
  PTime UTIL_getSpanTimeMicro(UTIL_time_t clockStart, UTIL_time_t clockEnd);
  PTime UTIL_getSpanTimeNano(UTIL_time_t clockStart, UTIL_time_t clockEnd);
  
  #define SEC_TO_MICRO ((PTime)1000000)
  PTime UTIL_clockSpanMicro(UTIL_time_t clockStart);
  PTime UTIL_clockSpanNano(UTIL_time_t clockStart);
  
  void UTIL_waitForNextTick(void);
  
  
  #if defined (__cplusplus)
  }
  #endif
  
  #endif /* TIME_FN_H_MODULE_287987 */
  