libc/stdlib/lcong48.c

   1 /* Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. */
   2
   3 #include <features.h>
   4
   5 #if defined __USE_SVID || defined __USE_XOPEN
   6 #include <stdint.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9
  10 static int __lcong48_r (unsigned short int param[7], struct drand48_data *buffer)
  11 {
  12         /* Store the given values. */
  13         memcpy (buffer->__x, &param[0], sizeof (buffer->__x));
  14         buffer->__a = ((uint64_t) param[5] << 32 | (uint32_t) param[4] << 16 | param[3]);
  15         buffer->__c = param[6];
  16         buffer->__init = 1;
  17
  18         return 0;
  19 }
  20 # ifdef __USE_MISC
  21 strong_alias(__lcong48_r,lcong48_r)
  22 # endif
  23
  24 void lcong48 (unsigned short int param[7])
  25 {
  26         (void) __lcong48_r (param, &__libc_drand48_data);
  27 }
  28 #endif