We found that C will compile the log function when used with magic numbers, but not with a variable. Any ideas?
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We found that C will compile the log function when used with magic numbers, but not with a variable. Any ideas?
Because you didn’t link your program to the math library and with a literal your compiler is probably using a builtin function.
With
gccyou will get the same error with-fno-builtinwith a literal.Link with lib math this way:
gcc bla.c -o bla -lm