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141 lines
3.5 KiB
C++
141 lines
3.5 KiB
C++
/* Printing operations with very long integers.
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Copyright (C) 2012-2022 Free Software Foundation, Inc.
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Contributed by Kenneth Zadeck <zadeck@naturalbridge.com>
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 3, or (at your option) any
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later version.
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GCC is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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/*
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* public printing routines.
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*/
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#define BLOCKS_NEEDED(PREC) \
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(((PREC) + HOST_BITS_PER_WIDE_INT - 1) / HOST_BITS_PER_WIDE_INT)
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void
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print_dec (const wide_int_ref &wi, char *buf, signop sgn)
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{
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if (sgn == SIGNED)
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print_decs (wi, buf);
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else
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print_decu (wi, buf);
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}
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void
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print_dec (const wide_int_ref &wi, FILE *file, signop sgn)
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{
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if (sgn == SIGNED)
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print_decs (wi, file);
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else
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print_decu (wi, file);
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}
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/* Try to print the signed self in decimal to BUF if the number fits
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in a HWI. Other print in hex. */
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void
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print_decs (const wide_int_ref &wi, char *buf)
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{
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if ((wi.get_precision () <= HOST_BITS_PER_WIDE_INT)
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|| (wi.get_len () == 1))
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{
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if (wi::neg_p (wi))
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sprintf (buf, "-" HOST_WIDE_INT_PRINT_UNSIGNED,
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-(unsigned HOST_WIDE_INT) wi.to_shwi ());
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else
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sprintf (buf, HOST_WIDE_INT_PRINT_DEC, wi.to_shwi ());
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}
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else
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print_hex (wi, buf);
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}
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/* Try to print the signed self in decimal to FILE if the number fits
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in a HWI. Other print in hex. */
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void
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print_decs (const wide_int_ref &wi, FILE *file)
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{
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char buf[WIDE_INT_PRINT_BUFFER_SIZE];
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print_decs (wi, buf);
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fputs (buf, file);
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}
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/* Try to print the unsigned self in decimal to BUF if the number fits
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in a HWI. Other print in hex. */
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void
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print_decu (const wide_int_ref &wi, char *buf)
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{
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if ((wi.get_precision () <= HOST_BITS_PER_WIDE_INT)
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|| (wi.get_len () == 1 && !wi::neg_p (wi)))
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sprintf (buf, HOST_WIDE_INT_PRINT_UNSIGNED, wi.to_uhwi ());
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else
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print_hex (wi, buf);
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}
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/* Try to print the signed self in decimal to FILE if the number fits
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in a HWI. Other print in hex. */
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void
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print_decu (const wide_int_ref &wi, FILE *file)
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{
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char buf[WIDE_INT_PRINT_BUFFER_SIZE];
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print_decu (wi, buf);
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fputs (buf, file);
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}
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void
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print_hex (const wide_int_ref &val, char *buf)
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{
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if (val == 0)
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buf += sprintf (buf, "0x0");
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else
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{
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buf += sprintf (buf, "0x");
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int start = ROUND_DOWN (val.get_precision (), HOST_BITS_PER_WIDE_INT);
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int width = val.get_precision () - start;
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bool first_p = true;
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for (int i = start; i >= 0; i -= HOST_BITS_PER_WIDE_INT)
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{
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unsigned HOST_WIDE_INT uhwi = wi::extract_uhwi (val, i, width);
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if (!first_p)
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buf += sprintf (buf, HOST_WIDE_INT_PRINT_PADDED_HEX, uhwi);
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else if (uhwi != 0)
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{
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buf += sprintf (buf, HOST_WIDE_INT_PRINT_HEX_PURE, uhwi);
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first_p = false;
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}
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width = HOST_BITS_PER_WIDE_INT;
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}
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}
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}
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/* Print one big hex number to FILE. Note that some assemblers may not
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accept this for large modes. */
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void
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print_hex (const wide_int_ref &wi, FILE *file)
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{
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char buf[WIDE_INT_PRINT_BUFFER_SIZE];
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print_hex (wi, buf);
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fputs (buf, file);
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}
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