From 85de48989da4009dced261ac326c70bad0ba0684 Mon Sep 17 00:00:00 2001
From: "David A. Mellis" <d.mellis@arduino.cc>
Date: Fri, 25 Dec 2009 20:20:27 +0000
Subject: Adding precision parameter for printing of floats / doubles. 
 Restructured the print() and println() functions a bit.

---
 cores/arduino/Print.cpp | 91 ++++++++++++++++++++++---------------------------
 cores/arduino/Print.h   | 34 +++++++++---------
 2 files changed, 58 insertions(+), 67 deletions(-)

(limited to 'cores/arduino')

diff --git a/cores/arduino/Print.cpp b/cores/arduino/Print.cpp
index 74d0e5b..fb5afc1 100755
--- a/cores/arduino/Print.cpp
+++ b/cores/arduino/Print.cpp
@@ -42,70 +42,61 @@ void Print::write(const uint8_t *buffer, size_t size)
     write(*buffer++);
 }
 
-void Print::print(uint8_t b)
-{
-  this->write(b);
-}
-
-void Print::print(char c)
-{
-  print((byte) c);
-}
-
 void Print::print(const char str[])
 {
   write(str);
 }
 
-void Print::print(int n)
+void Print::print(char c, int base)
 {
-  print((long) n);
+  print((long) c, base);
 }
 
-void Print::print(unsigned int n)
+void Print::print(unsigned char b, int base)
 {
-  print((unsigned long) n);
+  print((unsigned long) b, base);
 }
 
-void Print::print(long n)
+void Print::print(int n, int base)
 {
-  if (n < 0) {
-    print('-');
-    n = -n;
-  }
-  printNumber(n, 10);
+  print((long) n, base);
 }
 
-void Print::print(unsigned long n)
+void Print::print(unsigned int n, int base)
 {
-  printNumber(n, 10);
+  print((unsigned long) n, base);
 }
 
 void Print::print(long n, int base)
 {
-  if (base == 0)
-    print((char) n);
-  else if (base == 10)
-    print(n);
-  else
+  if (base == 0) {
+    write(n);
+  } else if (base == 10) {
+    if (n < 0) {
+      print('-');
+      n = -n;
+    }
+    printNumber(n, 10);
+  } else {
     printNumber(n, base);
+  }
 }
 
-void Print::print(double n)
+void Print::print(unsigned long n, int base)
 {
-  printFloat(n, 2);
+  if (base == 0) write(n);
+  else printNumber(n, base);
 }
 
-void Print::println(void)
+void Print::print(double n, int digits)
 {
-  print('\r');
-  print('\n');  
+  printFloat(n, digits);
 }
 
-void Print::println(char c)
+void Print::println(void)
 {
-  print(c);
-  println();  
+  print('\r');
+  print('\n');  
 }
 
 void Print::println(const char c[])
@@ -114,45 +105,45 @@ void Print::println(const char c[])
   println();
 }
 
-void Print::println(uint8_t b)
+void Print::println(char c, int base)
 {
-  print(b);
+  print(c, base);
   println();
 }
 
-void Print::println(int n)
+void Print::println(unsigned char b, int base)
 {
-  print(n);
+  print(b, base);
   println();
 }
 
-void Print::println(unsigned int n)
+void Print::println(int n, int base)
 {
-  print(n);
+  print(n, base);
   println();
 }
 
-void Print::println(long n)
+void Print::println(unsigned int n, int base)
 {
-  print(n);
-  println();  
+  print(n, base);
+  println();
 }
 
-void Print::println(unsigned long n)
+void Print::println(long n, int base)
 {
-  print(n);
-  println();  
+  print(n, base);
+  println();
 }
 
-void Print::println(long n, int base)
+void Print::println(unsigned long n, int base)
 {
   print(n, base);
   println();
 }
 
-void Print::println(double n)
+void Print::println(double n, int digits)
 {
-  print(n);
+  print(n, digits);
   println();
 }
 
diff --git a/cores/arduino/Print.h b/cores/arduino/Print.h
index a69e85d..8a1e2b8 100755
--- a/cores/arduino/Print.h
+++ b/cores/arduino/Print.h
@@ -38,25 +38,25 @@ class Print
     virtual void write(uint8_t) = 0;
     virtual void write(const char *str);
     virtual void write(const uint8_t *buffer, size_t size);
-    void print(char);
+
     void print(const char[]);
-    void print(uint8_t);
-    void print(int);
-    void print(unsigned int);
-    void print(long);
-    void print(unsigned long);
-    void print(long, int);
-    void print(double);
-    void println(void);
-    void println(char);
+    void print(char, int = BYTE);
+    void print(unsigned char, int = BYTE);
+    void print(int, int = DEC);
+    void print(unsigned int, int = DEC);
+    void print(long, int = DEC);
+    void print(unsigned long, int = DEC);
+    void print(double, int = 2);
+
     void println(const char[]);
-    void println(uint8_t);
-    void println(int);
-    void println(unsigned int);
-    void println(long);
-    void println(unsigned long);
-    void println(long, int);
-    void println(double);
+    void println(char, int = BYTE);
+    void println(unsigned char, int = BYTE);
+    void println(int, int = DEC);
+    void println(unsigned int, int = DEC);
+    void println(long, int = DEC);
+    void println(unsigned long, int = DEC);
+    void println(double, int = 2);
+    void println(void);
 };
 
 #endif
-- 
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