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Increase buffer size for converting floats + doubles to String's #32

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Increase buffer size for converting floats + doubles to String's #32

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6 changes: 4 additions & 2 deletions cores/arduino/WString.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,8 @@
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/

#include <float.h>

#include "WString.h"
#include "itoa.h"
#include "avr/dtostrf.h"
Expand Down Expand Up @@ -110,14 +112,14 @@ String::String(unsigned long value, unsigned char base)
String::String(float value, unsigned char decimalPlaces)
{
init();
char buf[33];
char buf[FLT_MAX_10_EXP + 4 + decimalPlaces]; // +4, one for: 10, -, ., \0
*this = dtostrf(value, (decimalPlaces + 2), decimalPlaces, buf);
}

String::String(double value, unsigned char decimalPlaces)
{
init();
char buf[33];
char buf[DBL_MAX_10_EXP + 4 + decimalPlaces]; // +4, one for: 10, -, ., \0
*this = dtostrf(value, (decimalPlaces + 2), decimalPlaces, buf);
}

Expand Down