
According to https://www.nongnu.org/avr-libc/user-manual/inline_asm.html, 'G' only represents floating point constant '0.0'. And avr-gcc also rejects other non-zero FP values.
According to https://www.nongnu.org/avr-libc/user-manual/inline_asm.html, 'G' only represents floating point constant '0.0'. And avr-gcc also rejects other non-zero FP values.