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ATOF(3)               DragonFly Library Functions Manual               ATOF(3)

NAME

atof, atof_l -- convert ASCII string to double

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <stdlib.h> double atof(const char *nptr); #include <xlocale.h> double atof_l(const char *nptr, locale_t loc);

DESCRIPTION

The atof() function converts the initial portion of the string pointed to by nptr to double representation. It is equivalent to: strtod(nptr, NULL); The decimal point character is defined in the program's locale (category LC_NUMERIC). The _l-suffixed version takes an explicit locale argument, whereas the non-suffixed version use the current global or per-thread locale.

IMPLEMENTATION NOTES

The atof() function is not thread-safe and also not async-cancel-safe. The atof() function has been deprecated by strtod() and should not be used in new code.

ERRORS

The function atof() need not affect the value of errno on an error.

SEE ALSO

atoi(3), atol(3), strtod(3), strtol(3), strtoul(3), xlocale(3)

STANDARDS

The atof() function conforms to ISO/IEC 9945-1:1990 (``POSIX.1''), ISO/IEC 9899:1990 (``ISO C90''), and ISO/IEC 9899:1999 (``ISO C99''). DragonFly 3.7 November 17, 2013 DragonFly 3.7

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