add uint16_read API like uint32_read

CHANGES

@@ -1,6 +1,7 @@
 0.13:
   fixed several bugs in test/uudecode.c
   add uninstall target
+  add uint16_read API like the uint32_read one
 
 0.12:
   add textcode api for uuencode/uudecode, base64, quoted printable,

uint/uint16_read.3

@@ -0,0 +1,16 @@
+.TH uint16_read 3
+.SH NAME
+uint16_read \- read an unsigned little-endian 16-bit integer
+.SH SYNTAX
+.B #include <uint16.h>
+
+uint16 \fBuint16_read\fP(const char \fIs\fR[4]);
+.SH DESCRIPTION
+uint16 is a 16-bit unsigned integer type, normally either unsigned int
+or unsigned long.
+
+uint16_read portably reads a uint16 as stored on a little-endian
+architecture from \fIs\fR and returns it.
+
+.SH "SEE ALSO"
+uint16_unpack(3), uint16_unpack_big(3)

uint/uint16_read.c

@@ -0,0 +1,6 @@
+#define NO_UINT16_MACROS
+#include "uint16.h"
+
+uint16 uint16_read(const char *in) {
+  return ((unsigned short)((unsigned char) in[1]) << 8) + (unsigned char)in[0];
+}

uint/uint16_read_big.3

@@ -0,0 +1,16 @@
+.TH uint16_read_big 3
+.SH NAME
+uint16_read_big \- read an unsigned big-endian 16-bit integer
+.SH SYNTAX
+.B #include <uint16.h>
+
+uint16 \fBuint16_read_big\fP(const char \fIs\fR[4]);
+.SH DESCRIPTION
+uint16 is a 16-bit unsigned integer type, normally either unsigned int
+or unsigned long.
+
+uint16_read_big portably reads a uint16 as stored on a big-endian
+architecture from \fIs\fR and returns it.
+
+.SH "SEE ALSO"
+uint16_unpack(3), uint16_unpack_big(3)

uint/uint16_read_big.c

@@ -0,0 +1,6 @@
+#define NO_UINT16_MACROS
+#include "uint16.h"
+
+uint16 uint16_read_big(const char *in) {
+  return ((unsigned short)((unsigned char) in[0]) << 8) + (unsigned char)in[1];
+}

uint16.h

@@ -5,40 +5,21 @@
 
 typedef unsigned short uint16;
 
-#ifndef __linux__
-#define NO_UINT16_MACROS
-#endif
-
-#ifdef NO_UINT16_MACROS
-extern void uint16_pack(char *out,uint16 in);
+#if defined(__i386__) && !defined(NO_UINT16_MACROS)
+#define uint16_pack(out,in) (*(uint16*)(out)=(in))
+#define uint16_unpack(in,out) (*(out)=*(uint16*)(in))
+#define uint16_read(in) (*(uint16*)(in))
 extern void uint16_pack_big(char *out,uint16 in);
-extern void uint16_unpack(const char *in,uint16* out);
 extern void uint16_unpack_big(const char *in,uint16* out);
-#else
-
-#include <endian.h>
-
-#if __BYTE_ORDER == __LITTLE_ENDIAN
-
-#define uint16_pack(out,in) (*(short*)(out)=(in))
-
-extern void uint16_pack_big(char *out,uint16 in);
-
-#define uint16_unpack(in,out) (*(out)=*(short*)(in))
-
-extern void uint16_unpack_big(const char *in,uint16* out);
-
+extern uint16 uint16_read_big(const char *in);
 #else
 
 extern void uint16_pack(char *out,uint16 in);
-
-#define uint16_pack_big(out,in) (*(short*)(out)=(in))
-
+extern void uint16_pack_big(char *out,uint16 in);
 extern void uint16_unpack(const char *in,uint16* out);
-
-#define uint16_unpack_big(in,out) (*(out)=*(short*)(in))
-
-#endif
+extern void uint16_unpack_big(const char *in,uint16* out);
+extern uint16 uint16_read(const char *in);
+extern uint16 uint16_read_big(const char *in);
 
 #endif