sc_int64_io.cpp

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  The following code is derived, directly or indirectly, from the SystemC
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  All Rights reserved.

  The contents of this file are subject to the restrictions and limitations
  set forth in the SystemC Open Source License Version 2.4 (the "License");
  You may not use this file except in compliance with such restrictions and
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  License at http://www.systemc.org/. Software distributed by Contributors
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/*****************************************************************************

  sc_int64_io.cpp --

  Original Author: Amit Rao, Synopsys, Inc.

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

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

  MODIFICATION LOG - modifiers, enter your name, affiliation, date and
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// $Log: sc_int64_io.cpp,v $
// Revision 1.1.1.1  2006/12/15 20:31:36  acg
// SystemC 2.2
//
// Revision 1.3  2006/01/13 18:49:31  acg
// Added $Log command so that CVS check in comments are reproduced in the
// source.
//

#include "sysc/utils/sc_iostream.h"
#include "sysc/datatypes/int/sc_unsigned.h"
#include "sysc/datatypes/int/sc_signed.h"
#include "sysc/datatypes/int/sc_int_base.h"
#include "sysc/datatypes/int/sc_uint_base.h"


#if defined( _MSC_VER )

namespace sc_dt
{

static void
write_uint64(::std::ostream& os, uint64 val, int sign)
{
    const int WRITE_BUF_SIZE = 10 + sizeof(uint64)*3;
    char buf[WRITE_BUF_SIZE];
    char* buf_ptr = buf + WRITE_BUF_SIZE;
    const char* show_base = "";
    int show_base_len = 0;
    int show_pos = 0;
    fmtflags flags = os.flags();

    if ((flags & ::std::ios::basefield) == ::std::ios::oct) {
        do {
            *--buf_ptr = (char)((val & 7) + '0');
            val = val >> 3;
        } while (val != 0);
        if ((flags & ::std::ios::showbase) && (*buf_ptr != '0'))
            *--buf_ptr = '0';
    } else if ((flags & ::std::ios::basefield) == ::std::ios::hex) {
        const char* xdigs = (flags & ::std::ios::uppercase) ? 
            "0123456789ABCDEF0X" : 
            "0123456789abcdef0x";
        do {
            *--buf_ptr = xdigs[val & 15];
            val = val >> 4;
        } while (val != 0);
        if ((flags & ::std::ios::showbase)) {
            show_base = xdigs + 16;
            show_base_len = 2;
        }
    } else {
        while (val > UINT_MAX) {
            *--buf_ptr = (char)((val % 10) + '0');
            val /= 10;
        }
        unsigned ival = (unsigned) val;
        do {
            *--buf_ptr = (ival % 10) + '0';
            ival /= 10;
        } while (ival != 0);
        if (sign > 0 && (flags & ::std::ios::showpos))
            show_pos = 1;
    }

    int buf_len = buf + WRITE_BUF_SIZE - buf_ptr;
    int w = os.width(0);

    int len = buf_len + show_pos;
    if (sign < 0) len++;
    len += show_base_len;

    int padding = len > w ? 0 : w - len;
    fmtflags pad_kind = flags & ::std::ios::adjustfield;
    char fill_char = os.fill();

    if (padding > 0 &&
        ::std::ios::left != pad_kind &&
        ::std::ios::internal != pad_kind) {
        for (int i = padding - 1; i >= 0; --i) {
            if (! os.put(fill_char))
                goto fail;
        }
    }
    if (sign < 0 || show_pos) {
        if (! os.put(sign < 0 ? '-' : '+'))
            goto fail;
    }
    if (show_base_len) {
        if (! os.write(show_base, show_base_len))
            goto fail;
    }
    if ((fmtflags)::std::ios::internal == pad_kind && padding > 0) {
        for (int i = padding - 1; i >= 0; --i) {
            if (! os.put(fill_char))
                goto fail;
        }
    }
    if (! os.write(buf_ptr, buf_len))
        goto fail;
    if ((fmtflags)::std::ios::left == pad_kind && padding > 0) {
        for (int i = padding - 1; i >= 0; --i) {
            if (! os.put(fill_char))
                goto fail;
        }
    }
    os.osfx();
    return;
fail:
    //os.set(::std::ios::badbit);
    os.osfx();
}

::std::ostream&
operator << ( ::std::ostream& os, int64 n )
{
    if (os.opfx()) {
        int sign = 1;
        uint64 abs_n = (uint64) n;
        if (n < 0 && (os.flags() & (::std::ios::oct|::std::ios::hex)) == 0) {
            abs_n = -1*((uint64) n);
            sign = -1;
        }
        sc_dt::write_uint64(os, abs_n, sign);
    }
    return os;
}

::std::ostream&
operator << ( ::std::ostream& os, uint64 n )
{
    if (os.opfx()) {
        sc_dt::write_uint64(os, n, 0);
    }
    return os;
}

} // namespace sc_dt


#endif

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