/*
    (C) 1995-96 AROS - The Amiga Replacement OS
    $Id: strtolong.c,v 1.7 1997/01/27 00:36:33 ldp Exp $
    $Log: strtolong.c,v $
    Revision 1.7  1997/01/27 00:36:33  ldp
    Polish

    Revision 1.6  1996/12/09 13:53:47  aros
    Added empty templates for all missing functions

    Moved #include's into first column

    Revision 1.5  1996/11/21 10:49:47  aros
    Created macros AROS_SLIB_ENTRY() for assembler files, too, to solve naming
    problems.

The #includes
    makedepend will ignore them (GCC works, though).

    Removed a couple of Logs

    Revision 1.4  1996/10/24 15:50:37  aros
    Use the official AROS macros over the __AROS versions.

    Revision 1.3  1996/08/13 13:52:52  digulla
    Replaced <dos/dosextens.h> by "dos_intern.h" or added "dos_intern.h"
    Replaced AROS_LA by AROS_LHA

    Revision 1.2  1996/08/01 17:40:58  digulla
    Added standard header for all files

    Desc:
    Lang: english
*/

/*****************************************************************************

    NAME */
#include <proto/dos.h>

	AROS_LH2I(LONG, StrToLong,

/*  SYNOPSIS */
	AROS_LHA(STRPTR, string, D1),
	AROS_LHA(LONG *, value,  D2),

/*  LOCATION */
	struct DosLibrary *, DOSBase, 136, Dos)

/*  FUNCTION

    INPUTS

    RESULT

    NOTES

    EXAMPLE

    BUGS

    SEE ALSO

    INTERNALS

    HISTORY
	29-10-95    digulla automatically created from
			    dos_lib.fd and clib/dos_protos.h

*****************************************************************************/
{
    AROS_LIBFUNC_INIT
    AROS_LIBBASE_EXT_DECL(struct DosLibrary *,DOSBase)

    LONG sign=0, v=0;
    STRPTR s=string;

    /* Skip leading whitespace characters */
    if(*s==' '||*s=='\t')
	s++;

    /* Swallow sign */
    if(*s=='+'||*s=='-')
	sign=*s++;

    /* If there is no number return an error. */
    if(*s<'0'||*s>'9')
    {
	*value=0;
	return -1;
    }

    /* Calculate result */
    do
	v=v*10+*s++-'0';
    while(*s>='0'&&*s<='9');

    /* Negative? */
    if(sign=='-')
	v=-v;

    /* All done. */
    *value=v;
    return s-string;
    AROS_LIBFUNC_EXIT
} /* StrToLong */