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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+//===========================================================================
+//
+//      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