projects / thirdparty / man-pages.git / blame
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1 | .\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) |
| 2 | .\" | |
| 3 | .\" Permission is granted to make and distribute verbatim copies of this | |
| 4 | .\" manual provided the copyright notice and this permission notice are | |
| 5 | .\" preserved on all copies. | |
| 6 | .\" | |
| 7 | .\" Permission is granted to copy and distribute modified versions of this | |
| 8 | .\" manual under the conditions for verbatim copying, provided that the | |
| 9 | .\" entire resulting derived work is distributed under the terms of a | |
| 10 | .\" permission notice identical to this one. | |
| 11 | .\" | |
| 12 | .\" Since the Linux kernel and libraries are constantly changing, this | |
| 13 | .\" manual page may be incorrect or out-of-date. The author(s) assume no | |
| 14 | .\" responsibility for errors or omissions, or for damages resulting from | |
| 15 | .\" the use of the information contained herein. The author(s) may not | |
| 16 | .\" have taken the same level of care in the production of this manual, | |
| 17 | .\" which is licensed free of charge, as they might when working | |
| 18 | .\" professionally. | |
| 19 | .\" | |
| 20 | .\" Formatted or processed versions of this manual, if unaccompanied by | |
| 21 | .\" the source, must acknowledge the copyright and authors of this work. | |
| 22 | .\" | |
| 23 | .\" References consulted: | |
| 24 | .\" Linux libc source code | |
| 25 | .\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) | |
| 26 | .\" 386BSD man pages | |
| 27 | .\" Modified Mon Mar 29 22:39:24 1993, David Metcalfe | |
| 28 | .\" Modified Sat Jul 24 21:39:22 1993, Rik Faith (faith@cs.unc.edu) | |
| 29 | .TH ATOF 3 1993-03-29 "GNU" "Linux Programmer's Manual" | |
| 30 | .SH NAME | |
| 31 | atof \- convert a string to a double | |
| 32 | .SH SYNOPSIS | |
| 33 | .nf | |
| 34 | .B #include <stdlib.h> | |
| 35 | .sp | |
| 36 | .BI "double atof(const char *" nptr ); | |
| 37 | .fi | |
| 38 | .SH DESCRIPTION | |
| 63aa9df0 | 39 | The \fBatof\fP() function converts the initial portion of the string |
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40 | pointed to by \fInptr\fP to double. The behaviour is the same as |
| 41 | .sp | |
| 42 | .RS | |
| b9f02710 | 43 | .B strtod(nptr, (char **) NULL); |
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44 | .RE |
| 45 | .sp | |
| 63aa9df0 | 46 | except that \fBatof\fP() does not detect errors. |
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47 | .SH "RETURN VALUE" |
| 48 | The converted value. | |
| 49 | .SH "CONFORMING TO" | |
| 68e1685c | 50 | SVr4, POSIX.1-2001, 4.3BSD, C89, C99. |
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51 | .SH "SEE ALSO" |
| 52 | .BR atoi (3), | |
| 53 | .BR atol (3), | |
| 54 | .BR strtod (3), | |
| 55 | .BR strtol (3), | |
| 56 | .BR strtoul (3) |