Code: Select all
log(1.2); //OK
float x=1.2; log(x); //OK
log(analogRead(A1)); //Error
sqrt(analogRead(A1)); //Error
abs(analogRead(A1)); //OK
sin(analogRead(A1)); //OK
Code: Select all
linking "test2_ino.elf" .............................. FAILED
C:\Users\duch\AppData\Local\Temp\arduino_build_672289\\test2_ino.opp: In function `loop()':
test2_ino.cpp:(.text._Z4loopv+0xc): undefined reference to `log'
collect2.exe: error: ld returned 1 exit status