kc3-lang/libtommath/mp_fwrite.c

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• Hash : 795cd201
  Author :
  Date : 2019-10-29T21:48:50
  

  simplifications: add s_mp_zero_(digs|buf) and s_mp_copy_digs
  
  Originally I made those as macros. However we have many
  other small functions like mp_clamp, mp_exch which are also not implemented
  as macros right now.
  
  If we would use c99, I would implement them as private static inline
  functions. And mp_exch would be a public static inline function.
  
  But since we are bound to c89, we simply use normal functions.
  To achieve optimal performance one should either use link time
  optimization or amalgamation.
  

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• mp_fwrite.c

• #include "tommath_private.h"
  #ifdef MP_FWRITE_C
  /* LibTomMath, multiple-precision integer library -- Tom St Denis */
  /* SPDX-License-Identifier: Unlicense */
  
  #ifndef MP_NO_FILE
  mp_err mp_fwrite(const mp_int *a, int radix, FILE *stream)
  {
     char *buf;
     mp_err err;
     size_t size, written;
  
     if ((err = mp_radix_size(a, radix, &size)) != MP_OKAY) {
        return err;
     }
  
     buf = (char *) MP_MALLOC(size);
     if (buf == NULL) {
        return MP_MEM;
     }
  
     if ((err = mp_to_radix(a, buf, size, &written, radix)) == MP_OKAY) {
        if (fwrite(buf, written, 1uL, stream) != 1uL) {
           err = MP_ERR;
        }
     }
  
     MP_FREE_BUF(buf, size);
     return err;
  }
  #endif
  
  #endif
  

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