ref: e9ab93461d0e7e043fadda396748c509b2cad5d3
dir: /lib/c/fwrite.c/
#include <stdio.h> #undef fwrite size_t fwrite(const void * restrict ptr, size_t size, size_t nmemb, FILE * restrict fp) { const unsigned char *bp = ptr; size_t n, i; if (size == 0) return 0; for (n = 0; n < nmemb; n++) { i = size; do putc(*bp++, fp); while (--i); if (ferror(fp)) break; } return n; }