40 lines
903 B
Groff
40 lines
903 B
Groff
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.\" @(#)atof.3 6.1 (Berkeley) 5/15/85
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.\"
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.TH ATOF 3 "May 15, 1985"
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.AT 3
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.SH NAME
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atof, atoi, atol \- convert ASCII to numbers
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.SH SYNOPSIS
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.nf
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.ft B
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#include <stdlib.h>
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double atof(const char *\fInptr\fP)
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int atoi(const char *\fInptr\fP)
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long atol(const char *\fInptr\fP)
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.ft R
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.fi
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.SH DESCRIPTION
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These functions convert a string pointed to by
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.I nptr
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to floating, integer, and long integer representation respectively.
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The first unrecognized character ends the string.
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.PP
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.B Atof
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recognizes an optional string of spaces, then an optional sign, then
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a string of digits optionally containing a decimal
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point, then an optional `e' or `E' followed by an optionally signed integer.
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.PP
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.B Atoi
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and
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.B atol
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recognize an optional string of spaces, then an optional sign, then a
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string of
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digits.
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.SH SEE ALSO
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.BR strtol (3),
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.BR strtod (3),
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.BR scanf (3).
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.SH BUGS
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There are no provisions for overflow.
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