Wide-Character Numerical Conversion

Convert among numerical types and wide-character strings.

  #include <wchar.h> 
  double wcstod(wchar_t * str, char ** end); 
  float wcstof(const wchar_t * restrict nptr, wchar_t ** restrict endptr); 
  long int wcstol(const wchar_t * restrict nptr, wchar_t ** restrict endptr, int base); 
  long double wcstold(const wchar_t * restrict nptr, wchar_t ** restrict endptr); 
  long long int wcstoll(const wchar_t * restrict nptr, wchar_t   ** restrict endptr,  int base); 
  unsigned long int wcstoul(const wchar_t * restrict nptr, wchar_t ** restrict endptr, int base); 
  unsigned long long int wcstoull( const wchar_t * restrict nptr, wchar_t ** restrict endptr, int base);

These functions operate identically to their counterpart functions in stdlib.h. But instead of operating on character strings, these functions operate on wide character strings.

The table below matches these wide character functions to their equivalent char-based functions in stdlib.h.\

Table 1. Wide Character Numerical Conversion Functions
Function	Wide Character Equivalent
wcstod()	strtod()
wcstof()	strtof()
wcstol()	strtol()
wcstoll()	strtoll()
wcstoul()	strtoul()
wcstoull()	strtoull()