1  /* Measure stpncpy functions.
       2     Copyright (C) 2013-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #define STRNCPY_RESULT(dst, len, n) ((dst) + ((len) > (n) ? (n) : (len)))
      20  #define TEST_MAIN
      21  #ifndef WIDE
      22  # define TEST_NAME "stpncpy"
      23  #else
      24  # define TEST_NAME "wcpncpy"
      25  # define generic_stpncpy generic_wcpncpy
      26  #endif /* WIDE */
      27  #include "bench-string.h"
      28  
      29  CHAR *
      30  generic_stpncpy (CHAR *dst, const CHAR *src, size_t n)
      31  {
      32    size_t nc = STRNLEN (src, n);
      33    MEMCPY (dst, src, nc);
      34    dst += nc;
      35    if (nc == n)
      36      return dst;
      37    return MEMSET (dst, 0, n - nc);
      38  }
      39  
      40  IMPL (STPNCPY, 1)
      41  IMPL (generic_stpncpy, 0)
      42  
      43  #include "bench-strncpy.c"