text: /* SPDX-License-Identifier: GPL-2.0+ */
  /*
   * (C) Copyright 2000-2009
   * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   */
  
  #ifndef __VSPRINTF_H
  #define __VSPRINTF_H
  
  #include <stdarg.h>
  #include <linux/types.h>
  
  ulong simple_strtoul(const char *cp, char **endp, unsigned int base);
  
  /**
   * strict_strtoul - convert a string to an unsigned long strictly
   * @param cp	The string to be converted
   * @param base	The number base to use
   * @param res	The converted result value
   * @return 0 if conversion is successful and *res is set to the converted
   * value, otherwise it returns -EINVAL and *res is set to 0.
   *
   * strict_strtoul converts a string to an unsigned long only if the
   * string is really an unsigned long string, any string containing
   * any invalid char at the tail will be rejected and -EINVAL is returned,
   * only a newline char at the tail is acceptible because people generally
   * change a module parameter in the following way:
   *
   *      echo 1024 > /sys/module/e1000/parameters/copybreak
   *
   * echo will append a newline to the tail.
   *
   * simple_strtoul just ignores the successive invalid characters and
   * return the converted value of prefix part of the string.
   *
   * Copied this function from Linux 2.6.38 commit ID:
   * 521cb40b0c44418a4fd36dc633f575813d59a43d
   *
   */
  int strict_strtoul(const char *cp, unsigned int base, unsigned long *res);
  unsigned long long simple_strtoull(const char *cp, char **endp,
  					unsigned int base);
  long simple_strtol(const char *cp, char **endp, unsigned int base);
  
  /**
   * trailing_strtol() - extract a trailing integer from a string
   *
   * Given a string this finds a trailing number on the string and returns it.
   * For example, "abc123" would return 123.
   *
   * @str:	String to exxamine
   * @return training number if found, else -1
   */
  long trailing_strtol(const char *str);
  
  /**
   * trailing_strtoln() - extract a trailing integer from a fixed-length string
   *
   * Given a fixed-length string this finds a trailing number on the string
   * and returns it. For example, "abc123" would return 123. Only the
   * characters between @str and @end - 1 are examined. If @end is NULL, it is
   * set to str + strlen(str).
   *
   * @str:	String to exxamine
   * @end:	Pointer to end of string to examine, or NULL to use the
   *		whole string
   * @return training number if found, else -1
   */
  long trailing_strtoln(const char *str, const char *end);
  
  /**
   * panic() - Print a message and reset/hang
   *
   * Prints a message on the console(s) and then resets. If CONFIG_PANIC_HANG is
   * defined, then it will hang instead of resetting.
   *
   * @param fmt:	printf() format string for message, which should not include
   *		\n, followed by arguments
   */
  void panic(const char *fmt, ...)
  		__attribute__ ((format (__printf__, 1, 2), noreturn));
  
  /**
   * panic_str() - Print a message and reset/hang
   *
   * Prints a message on the console(s) and then resets. If CONFIG_PANIC_HANG is
   * defined, then it will hang instead of resetting.
   *
   * This function can be used instead of panic() when your board does not
   * already use printf(), * to keep code size small.
   *
   * @param fmt:	string to display, which should not include \n
   */
  void panic_str(const char *str) __attribute__ ((noreturn));
  
  /**
   * Format a string and place it in a buffer
   *
   * @param buf	The buffer to place the result into
   * @param fmt	The format string to use
   * @param ...	Arguments for the format string
   *
   * The function returns the number of characters written
   * into @buf.
   *
   * See the vsprintf() documentation for format string extensions over C99.
   */
  int sprintf(char *buf, const char *fmt, ...)
  		__attribute__ ((format (__printf__, 2, 3)));
  
  /**
   * Format a string and place it in a buffer (va_list version)
   *
   * @param buf	The buffer to place the result into
   * @param fmt	The format string to use
   * @param args	Arguments for the format string
   * @return the number of characters which have been written into
   * the @buf not including the trailing '\0'.
   *
   * If you're not already dealing with a va_list consider using scnprintf().
   *
   * See the vsprintf() documentation for format string extensions over C99.
   */
  int vsprintf(char *buf, const char *fmt, va_list args);
  char *simple_itoa(ulong i);
  
  /**
   * Format a string and place it in a buffer
   *
   * @param buf	The buffer to place the result into
   * @param size	The size of the buffer, including the trailing null space
   * @param fmt	The format string to use
   * @param ...	Arguments for the format string
   * @return the number of characters which would be
   * generated for the given input, excluding the trailing null,
   * as per ISO C99.  If the return is greater than or equal to
   * @size, the resulting string is truncated.
   *
   * See the vsprintf() documentation for format string extensions over C99.
   */
  int snprintf(char *buf, size_t size, const char *fmt, ...)
  		__attribute__ ((format (__printf__, 3, 4)));
  
  /**
   * Format a string and place it in a buffer
   *
   * @param buf	The buffer to place the result into
   * @param size	The size of the buffer, including the trailing null space
   * @param fmt	The format string to use
   * @param ...	Arguments for the format string
   *
   * The return value is the number of characters written into @buf not including
   * the trailing '\0'. If @size is == 0 the function returns 0.
   *
   * See the vsprintf() documentation for format string extensions over C99.
   */
  int scnprintf(char *buf, size_t size, const char *fmt, ...)
  		__attribute__ ((format (__printf__, 3, 4)));
  
  /**
   * Format a string and place it in a buffer (base function)
   *
   * @param buf	The buffer to place the result into
   * @param size	The size of the buffer, including the trailing null space
   * @param fmt	The format string to use
   * @param args	Arguments for the format string
   * @return The number characters which would be generated for the given
   * input, excluding the trailing '\0', as per ISO C99. Note that fewer
   * characters may be written if this number of characters is >= size.
   *
   * This function follows C99 vsnprintf, but has some extensions:
   * %pS output the name of a text symbol
   * %pF output the name of a function pointer
   * %pR output the address range in a struct resource
   *
   * The function returns the number of characters which would be
   * generated for the given input, excluding the trailing '\0',
   * as per ISO C99.
   *
   * Call this function if you are already dealing with a va_list.
   * You probably want snprintf() instead.
   */
  int vsnprintf(char *buf, size_t size, const char *fmt, va_list args);
  
  /**
   * Format a string and place it in a buffer (va_list version)
   *
   * @param buf	The buffer to place the result into
   * @param size	The size of the buffer, including the trailing null space
   * @param fmt	The format string to use
   * @param args	Arguments for the format string
   * @return the number of characters which have been written into
   * the @buf not including the trailing '\0'. If @size is == 0 the function
   * returns 0.
   *
   * If you're not already dealing with a va_list consider using scnprintf().
   *
   * See the vsprintf() documentation for format string extensions over C99.
   */
  int vscnprintf(char *buf, size_t size, const char *fmt, va_list args);
  
  /**
   * print_grouped_ull() - print a value with digits grouped by ','
   *
   * This prints a value with grouped digits, like 12,345,678 to make it easier
   * to read.
   *
   * @val:	Value to print
   * @digits:	Number of digiits to print
   */
  void print_grouped_ull(unsigned long long int_val, int digits);
  
  bool str2off(const char *p, loff_t *num);
  bool str2long(const char *p, ulong *num);
  #endif
  