Merge pull request arduino#433 from felias-fogg/master

facchinm · web-flow · commit 6507dfef3ed9 · 2021-11-17T11:06:45.000+01:00
Speed up 'available' method by inserting unsigned int cast
diff --git a/libraries/SoftwareSerial/src/SoftwareSerial.cpp b/libraries/SoftwareSerial/src/SoftwareSerial.cpp
@@ -409,7 +409,7 @@ int SoftwareSerial::available()
   if (!isListening())
     return 0;
 
-  return (_receive_buffer_tail + _SS_MAX_RX_BUFF - _receive_buffer_head) % _SS_MAX_RX_BUFF;
+  return ((unsigned int)(_receive_buffer_tail + _SS_MAX_RX_BUFF - _receive_buffer_head)) % _SS_MAX_RX_BUFF;
 }
 
 size_t SoftwareSerial::write(uint8_t b)

Original file line number	Diff line number	Diff line change
`@@ -409,7 +409,7 @@ int SoftwareSerial::available()`
`409`	`409`	`if (!isListening())`
`410`	`410`	`return 0;`
`411`	`411`
`412`		`- return (_receive_buffer_tail + _SS_MAX_RX_BUFF - _receive_buffer_head) % _SS_MAX_RX_BUFF;`
	`412`	`+ return ((unsigned int)(_receive_buffer_tail + _SS_MAX_RX_BUFF - _receive_buffer_head)) % _SS_MAX_RX_BUFF;`
`413`	`413`	`}`
`414`	`414`
`415`	`415`	`size_t SoftwareSerial::write(uint8_t b)`