Mercurial > ecos
diff packages/language/c/libc/current/src/stdlib/atof.cxx @ 0:3111d98ba7b3 ecos-v1_1-release
Initial commit of eCos version 1.1
| author | jlarmour |
|---|---|
| date | Tue, 11 May 1999 11:16:07 +0000 |
| parents | |
| children | 443894e2e912 |
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new file mode 100644 --- /dev/null +++ b/packages/language/c/libc/current/src/stdlib/atof.cxx @@ -0,0 +1,95 @@ +//=========================================================================== +// +// atof.cxx +// +// Real alternative for inline implementation of the ANSI standard +// atof() utility function defined in section 7.10.1.1 of the standard +// +//=========================================================================== +//####COPYRIGHTBEGIN#### +// +// ------------------------------------------- +// The contents of this file are subject to the Cygnus eCos Public License +// Version 1.0 (the "License"); you may not use this file except in +// compliance with the License. You may obtain a copy of the License at +// http://sourceware.cygnus.com/ecos +// +// Software distributed under the License is distributed on an "AS IS" +// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the +// License for the specific language governing rights and limitations under +// the License. +// +// The Original Code is eCos - Embedded Cygnus Operating System, released +// September 30, 1998. +// +// The Initial Developer of the Original Code is Cygnus. Portions created +// by Cygnus are Copyright (C) 1998 Cygnus Solutions. All Rights Reserved. +// ------------------------------------------- +// +//####COPYRIGHTEND#### +//=========================================================================== +//#####DESCRIPTIONBEGIN#### +// +// Author(s): jlarmour +// Contributors: jlarmour@cygnus.co.uk +// Date: 1998-02-13 +// Purpose: +// Description: +// Usage: +// +//####DESCRIPTIONEND#### +// +//=========================================================================== + +// CONFIGURATION + +#include <pkgconf/libc.h> // Configuration header + +// Include the C library? And strtod() which we use? +#if defined(CYGPKG_LIBC) && defined(CYGFUN_LIBC_strtod) + +// INCLUDES + +#include <cyg/infra/cyg_type.h> // Common type definitions and support +#include <cyg/infra/cyg_trac.h> // Tracing support +#include <cyg/infra/cyg_ass.h> // Assertion support + +// We don't want the inline versions of stdlib functions defined here + +#ifdef CYGIMP_LIBC_STDLIB_INLINES +#undef CYGIMP_LIBC_STDLIB_INLINES +#endif + +#include <stddef.h> // NULL, wchar_t and size_t from compiler +#include <stdlib.h> // Main header for stdlib functions +#include "clibincl/stdlibsupp.hxx" // Support for stdlib functions + + +// EXPORTED SYMBOLS + +externC double +atof( const char * ) CYGPRI_LIBC_WEAK_ALIAS("_atof"); + + +// FUNCTIONS + +double +_atof( const char *nptr ) +{ + double retval; + + CYG_REPORT_FUNCNAMETYPE( "_atof", "returning %f" ); + + CYG_CHECK_DATA_PTR( nptr, "nptr is an invalid pointer!" ); + + retval = _strtod( nptr, (char **)NULL ); + + CYG_REPORT_RETVAL( retval ); + + return retval; +} // _atof() + + +#endif // if defined(CYGPKG_LIBC) && defined(CYGFUN_LIBC_strtod) + +// EOF atof.cxx
