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Conversion functions for double arguments.
Note that these functions are not located in the default library, libc.a, but in the mathematical library, libm.a. So when linking the application, the -lm option needs to be specified.
Code:
#define DTOSTR_ALWAYS_SIGN 0x01
#define DTOSTR_PLUS_SIGN 0x02
#define DTOSTR_UPPERCASE 0x04
char * dtostre (double __val, char *__s, unsigned char __prec, unsigned char __flags)
char * dtostrf (double __val, char __width, char __prec, char *__s)
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