text: /* Copyright (c) 2003-2004, Roger Dingledine
   * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
   * Copyright (c) 2007-2021, The Tor Project, Inc. */
  /* See LICENSE for licensing information */
  
  /**
   * \file cmp.h
   *
   * \brief Macro definitions for MIN, MAX, and CLAMP.
   **/
  
  #ifndef TOR_INTMATH_CMP_H
  #define TOR_INTMATH_CMP_H
  
  /** Macros for MIN/MAX.  Never use these when the arguments could have
   * side-effects.
   * {With GCC extensions we could probably define a safer MIN/MAX.  But
   * depending on that safety would be dangerous, since not every platform
   * has it.}
   **/
  #ifndef MAX
  #define MAX(a,b) ( ((a)<(b)) ? (b) : (a) )
  #endif
  #ifndef MIN
  #define MIN(a,b) ( ((a)>(b)) ? (b) : (a) )
  #endif
  
  /* Return <b>v</b> if it's between <b>min</b> and <b>max</b>.  Otherwise
   * return <b>min</b> if <b>v</b> is smaller than <b>min</b>, or <b>max</b> if
   * <b>b</b> is larger than <b>max</b>.
   *
   * Requires that <b>min</b> is no more than <b>max</b>. May evaluate any of
   * its arguments more than once! */
  #define CLAMP(min,v,max)                        \
    ( ((v) < (min)) ? (min) :                     \
      ((v) > (max)) ? (max) :                     \
      (v) )
  
  /** Give the absolute value of <b>x</b>, independent of its type. */
  #define ABS(x) ( ((x)<0) ? -(x) : (x) )
  
  #endif /* !defined(TOR_INTMATH_CMP_H) */
  