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ATOF(3) Linux Programmer's Manual ATOF(3) NAME atof - convert a string to a double SYNOPSIS #include <stdlib.h> double atof(const char *nptr); DESCRIPTION The atof() function converts the initial portion of the string pointed to by nptr to double. The behavior is the same as strtod(nptr, NULL); except that atof() does not detect errors. RETURN VALUE The converted value. ATTRIBUTES For an explanation of the terms used in this section, see attributes(7). βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ¬ββββββββββββββββ¬βββββββββββββββββ βInterface β Attribute β Value β βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββΌββββββββββββββββΌβββββββββββββββββ€ βatof() β Thread safety β MT-Safe locale β βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ΄ββββββββββββββββ΄βββββββββββββββββ CONFORMING TO POSIX.1-2001, POSIX.1-2008, C89, C99, SVr4, 4.3BSD. SEE ALSO atoi(3), atol(3), strfromd(3), strtod(3), strtol(3), strtoul(3) GNU 2021-03-22 ATOF(3)