CC3220 — 'ltoa' was not declared in this scope

[rei-vilo]

The following sketch succeeds to compile against the CC3200 but fails against the CC3220SF.

• Error message

/private/var/folders/px/cyfvtr757lqg0yp_cv9j79jh0000gn/T/arduino_modified_sketch_537852/sketch_oct24a.ino: In function 'void setupsketch_oct24a()':
sketch_oct24a:6:22: error: 'ltoa' was not declared in this scope
ltoa(value, str, 10);
^
exit status 1
'ltoa' was not declared in this scope

• Minimal code

void setup() {
  // put your setup code here, to run once:
  long value = 12.34;
  char * str;
  ltoa(value, str, 10);
}

void loop() {
  // put your main code here, to run repeatedly:

}