X-Git-Url: https://plomlompom.com/repos/berlin_corona.txt?a=blobdiff_plain;f=src%2Freadwrite.c;h=9f089ea34da821394313b4b81835f5e10ed158c0;hb=2653efdf1ee13bae3357e0c2964b77588d95b27b;hp=ed5a3a3180f990ec8af3c001a44c85c557a3f80e;hpb=e9d8b1aca776341c9cdaa2ea6406336661d82a76;p=plomrogue

diff --git a/src/readwrite.c b/src/readwrite.c
index ed5a3a3..9f089ea 100644
--- a/src/readwrite.c
+++ b/src/readwrite.c
@@ -2,39 +2,36 @@
 #include <limits.h>
 #include <stdint.h>
 
-uint16_t read_uint16_bigendian(FILE * file) {
+static const uint16_t uchar_s = UCHAR_MAX + 1;
+
+extern uint16_t read_uint16_bigendian(FILE * file) {
 // Read uint16 from file in big-endian order.
-  const uint16_t nchar = UCHAR_MAX + 1;
   unsigned char a = fgetc(file);
   unsigned char b = fgetc(file);
-  return (a * nchar) + b; }
+  return (a * uchar_s) + b; }
 
-void write_uint16_bigendian(uint16_t x, FILE * file) {
+extern void write_uint16_bigendian(uint16_t x, FILE * file) {
 // Write uint16 to file in beg-endian order.
-  const uint16_t nchar = UCHAR_MAX + 1;
-  unsigned char a = x / nchar;
-  unsigned char b = x % nchar;
+  unsigned char a = x / uchar_s;
+  unsigned char b = x % uchar_s;
   fputc(a, file);
   fputc(b, file); }
 
-uint32_t read_uint32_bigendian(FILE * file) {
+extern uint32_t read_uint32_bigendian(FILE * file) {
 // Read uint32 from file in big-endian order.
-  const uint16_t nchar = UCHAR_MAX + 1;
   unsigned char a = fgetc(file);
   unsigned char b = fgetc(file);
   unsigned char c = fgetc(file);
   unsigned char d = fgetc(file);
-  return (a * nchar * nchar * nchar) + (b * nchar * nchar) + (c * nchar) + d; }
+  return (a * uchar_s * uchar_s * uchar_s) + (b * uchar_s * uchar_s) + (c * uchar_s) + d; }
 
-void write_uint32_bigendian(uint32_t x, FILE * file) {
+extern void write_uint32_bigendian(uint32_t x, FILE * file) {
 // Write uint32 to file in beg-endian order.
-  const uint16_t nchar = UCHAR_MAX + 1;
-  unsigned char a = x / (nchar * nchar * nchar);
-  unsigned char b = (x - (a * nchar * nchar * nchar)) / (nchar * nchar);
-  unsigned char c = (x - ((a * nchar * nchar * nchar) + (b * nchar * nchar))) / nchar;
-  unsigned char d = x % nchar;
+  unsigned char a = x / (uchar_s * uchar_s * uchar_s);
+  unsigned char b = (x - (a * uchar_s * uchar_s * uchar_s)) / (uchar_s * uchar_s);
+  unsigned char c = (x - ((a * uchar_s * uchar_s * uchar_s) + (b * uchar_s * uchar_s))) / uchar_s;
+  unsigned char d = x % uchar_s;
   fputc(a, file);
   fputc(b, file);
   fputc(c, file);
   fputc(d, file); }
-