math/gen-libm-test.pl

   1 #!/usr/bin/perl -w
   2 # Copyright (C) 1999-2016 Free Software Foundation, Inc.
   3 # This file is part of the GNU C Library.
   4 # Contributed by Andreas Jaeger <aj@suse.de>, 1999.
   5
   6 # The GNU C Library is free software; you can redistribute it and/or
   7 # modify it under the terms of the GNU Lesser General Public
   8 # License as published by the Free Software Foundation; either
   9 # version 2.1 of the License, or (at your option) any later version.
  10
  11 # The GNU C Library is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 # Lesser General Public License for more details.
  15
  16 # You should have received a copy of the GNU Lesser General Public
  17 # License along with the GNU C Library; if not, see
  18 # <http://www.gnu.org/licenses/>.
  19
  20 # This file needs to be tidied up
  21 # Note that functions and tests share the same namespace.
  22
  23 # Information about tests are stored in: %results
  24 # $results{$test}{"type"} is the result type, e.g. normal or complex.
  25 # $results{$test}{"has_ulps"} is set if deltas exist.
  26 # In the following description $type and $float are:
  27 # - $type is either "normal", "real" (for the real part of a complex number)
  28 #   or "imag" (for the imaginary part # of a complex number).
  29 # - $float is either of float, ifloat, double, idouble, ldouble, ildouble;
  30 #   It represents the underlying floating point type (float, double or long
  31 #   double) and if inline functions (the leading i stands for inline)
  32 #   are used.
  33 # $results{$test}{$type}{"ulp"}{$float} is defined and has a delta as value
  34
  35
  36 use Getopt::Std;
  37
  38 use strict;
  39
  40 use vars qw ($input $output $auto_input);
  41 use vars qw (%results);
  42 use vars qw (%beautify @all_floats);
  43 use vars qw ($output_dir $ulps_file $srcdir);
  44 use vars qw (%auto_tests);
  45
  46 # all_floats is sorted and contains all recognised float types
  47 @all_floats = ('double', 'float', 'idouble',
  48                'ifloat', 'ildouble', 'ldouble');
  49
  50 %beautify =
  51   ( "minus_zero" => "-0",
  52     "plus_zero" => "+0",
  53     "-0x0p+0f" => "-0",
  54     "-0x0p+0" => "-0",
  55     "-0x0p+0L" => "-0",
  56     "0x0p+0f" => "+0",
  57     "0x0p+0" => "+0",
  58     "0x0p+0L" => "+0",
  59     "minus_infty" => "-inf",
  60     "plus_infty" => "inf",
  61     "qnan_value" => "qNaN",
  62   );
  63
  64
  65 # get Options
  66 # Options:
  67 # u: ulps-file
  68 # h: help
  69 # o: output-directory
  70 # n: generate new ulps file
  71 use vars qw($opt_u $opt_h $opt_o $opt_n);
  72 getopts('u:o:nh');
  73
  74 $ulps_file = 'libm-test-ulps';
  75 $output_dir = '';
  76 ($srcdir = $0) =~ s{[^/]*$}{};
  77
  78 if ($opt_h) {
  79   print "Usage: gen-libm-test.pl [OPTIONS]\n";
  80   print " -h         print this help, then exit\n";
  81   print " -o DIR     directory where generated files will be placed\n";
  82   print " -n         only generate sorted file NewUlps from libm-test-ulps\n";
  83   print " -u FILE    input file with ulps\n";
  84   exit 0;
  85 }
  86
  87 $ulps_file = $opt_u if ($opt_u);
  88 $output_dir = $opt_o if ($opt_o);
  89
  90 $input = "libm-test.inc";
  91 $auto_input = "${srcdir}auto-libm-test-out";
  92 $output = "${output_dir}libm-test.c";
  93
  94 &parse_ulps ($ulps_file);
  95 &parse_auto_input ($auto_input);
  96 &generate_testfile ($input, $output) unless ($opt_n);
  97 &output_ulps ("${output_dir}libm-test-ulps.h", $ulps_file) unless ($opt_n);
  98 &print_ulps_file ("${output_dir}NewUlps") if ($opt_n);
  99
 100 # Return a nicer representation
 101 sub beautify {
 102   my ($arg) = @_;
 103   my ($tmp);
 104
 105   if (exists $beautify{$arg}) {
 106     return $beautify{$arg};
 107   }
 108   if ($arg =~ /^-/) {
 109     $tmp = $arg;
 110     $tmp =~ s/^-//;
 111     if (exists $beautify{$tmp}) {
 112       return '-' . $beautify{$tmp};
 113     }
 114   }
 115   if ($arg =~ /^-?0x[0-9a-f.]*p[-+][0-9]+f$/) {
 116     $arg =~ s/f$//;
 117   }
 118   if ($arg =~ /[0-9]L$/) {
 119     $arg =~ s/L$//;
 120   }
 121   return $arg;
 122 }
 123
 124 # Return a nicer representation of a complex number
 125 sub build_complex_beautify {
 126   my ($r, $i) = @_;
 127   my ($str1, $str2);
 128
 129   $str1 = &beautify ($r);
 130   $str2 = &beautify ($i);
 131   if ($str2 =~ /^-/) {
 132     $str2 =~ s/^-//;
 133     $str1 .= ' - ' . $str2;
 134   } else {
 135     $str1 .= ' + ' . $str2;
 136   }
 137   $str1 .= ' i';
 138   return $str1;
 139 }
 140
 141 # Return the text to put in an initializer for a test's exception
 142 # information.
 143 sub show_exceptions {
 144   my ($ignore_result, $non_finite, $exception) = @_;
 145   $ignore_result = ($ignore_result ? "IGNORE_RESULT|" : "");
 146   $non_finite = ($non_finite ? "NON_FINITE|" : "");
 147   if (defined $exception) {
 148     return ", ${ignore_result}${non_finite}$exception";
 149   } else {
 150     return ", ${ignore_result}${non_finite}0";
 151   }
 152 }
 153
 154 # Parse the arguments to TEST_x_y
 155 sub parse_args {
 156   my ($file, $descr, $args) = @_;
 157   my (@args, $descr_args, $descr_res, @descr);
 158   my ($current_arg, $cline, $cline_res, $i);
 159   my (@special);
 160   my ($call_args);
 161   my ($ignore_result_any, $ignore_result_all);
 162   my ($num_res, @args_res, @start_rm, $rm);
 163   my (@plus_oflow, @minus_oflow, @plus_uflow, @minus_uflow);
 164   my (@errno_plus_oflow, @errno_minus_oflow);
 165   my (@errno_plus_uflow, @errno_minus_uflow);
 166   my ($non_finite);
 167
 168   ($descr_args, $descr_res) = split /_/,$descr, 2;
 169
 170   @args = split /,\s*/, $args;
 171
 172   $call_args = "";
 173
 174   # Generate first the string that's shown to the user
 175   $current_arg = 1;
 176   @descr = split //,$descr_args;
 177   for ($i = 0; $i <= $#descr; $i++) {
 178     my $comma = "";
 179     if ($current_arg > 1) {
 180       $comma = ', ';
 181     }
 182     # FLOAT, int, long int, long long int
 183     if ($descr[$i] =~ /f|i|l|L/) {
 184       $call_args .= $comma . &beautify ($args[$current_arg]);
 185       ++$current_arg;
 186       next;
 187     }
 188     # &FLOAT, &int - simplify call by not showing argument.
 189     if ($descr[$i] =~ /F|I/) {
 190       next;
 191     }
 192     # complex
 193     if ($descr[$i] eq 'c') {
 194       $call_args .= $comma . &build_complex_beautify ($args[$current_arg], $args[$current_arg+1]);
 195       $current_arg += 2;
 196       next;
 197     }
 198
 199     die ("$descr[$i] is unknown");
 200   }
 201
 202   # Result
 203   @args_res = @args[$current_arg .. $#args];
 204   $num_res = 0;
 205   @descr = split //,$descr_res;
 206   foreach (@descr) {
 207     if ($_ =~ /f|i|l|L/) {
 208       ++$num_res;
 209     } elsif ($_ eq 'c') {
 210       $num_res += 2;
 211     } elsif ($_ eq 'b') {
 212       # boolean
 213       ++$num_res;
 214     } elsif ($_ eq '1') {
 215       ++$num_res;
 216     } else {
 217       die ("$_ is unknown");
 218     }
 219   }
 220   # consistency check
 221   if ($#args_res == $num_res - 1) {
 222     # One set of results for all rounding modes, no flags.
 223     @start_rm = ( 0, 0, 0, 0 );
 224   } elsif ($#args_res == $num_res) {
 225     # One set of results for all rounding modes, with flags.
 226     die ("wrong number of arguments")
 227       unless ($args_res[$#args_res] =~ /EXCEPTION|ERRNO|IGNORE_ZERO_INF_SIGN|TEST_NAN_SIGN|NO_TEST_INLINE|XFAIL_TEST/);
 228     @start_rm = ( 0, 0, 0, 0 );
 229   } elsif ($#args_res == 4 * $num_res + 3) {
 230     # One set of results per rounding mode, with flags.
 231     @start_rm = ( 0, $num_res + 1, 2 * $num_res + 2, 3 * $num_res + 3 );
 232   } else {
 233     die ("wrong number of arguments");
 234   }
 235
 236   # Put the C program line together
 237   # Reset some variables to start again
 238   $current_arg = 1;
 239   $cline = "{ \"$call_args\"";
 240   @descr = split //,$descr_args;
 241   for ($i=0; $i <= $#descr; $i++) {
 242     # FLOAT, int, long int, long long int
 243     if ($descr[$i] =~ /f|i|l|L/) {
 244       $cline .= ", $args[$current_arg]";
 245       $current_arg++;
 246       next;
 247     }
 248     # &FLOAT, &int
 249     if ($descr[$i] =~ /F|I/) {
 250       next;
 251     }
 252     # complex
 253     if ($descr[$i] eq 'c') {
 254       $cline .= ", $args[$current_arg], $args[$current_arg+1]";
 255       $current_arg += 2;
 256       next;
 257     }
 258   }
 259
 260   @descr = split //,$descr_res;
 261   @plus_oflow = qw(max_value plus_infty max_value plus_infty);
 262   @minus_oflow = qw(minus_infty minus_infty -max_value -max_value);
 263   @plus_uflow = qw(plus_zero plus_zero plus_zero min_subnorm_value);
 264   @minus_uflow = qw(-min_subnorm_value minus_zero minus_zero minus_zero);
 265   @errno_plus_oflow = qw(0 ERRNO_ERANGE 0 ERRNO_ERANGE);
 266   @errno_minus_oflow = qw(ERRNO_ERANGE ERRNO_ERANGE 0 0);
 267   @errno_plus_uflow = qw(ERRNO_ERANGE ERRNO_ERANGE ERRNO_ERANGE 0);
 268   @errno_minus_uflow = qw(0 ERRNO_ERANGE ERRNO_ERANGE ERRNO_ERANGE);
 269   for ($rm = 0; $rm <= 3; $rm++) {
 270     $current_arg = $start_rm[$rm];
 271     $ignore_result_any = 0;
 272     $ignore_result_all = 1;
 273     $cline_res = "";
 274     @special = ();
 275     foreach (@descr) {
 276       if ($_ =~ /b|f|i|l|L/ ) {
 277         my ($result) = $args_res[$current_arg];
 278         if ($result eq "IGNORE") {
 279           $ignore_result_any = 1;
 280           $result = "0";
 281         } else {
 282           $ignore_result_all = 0;
 283         }
 284         $cline_res .= ", $result";
 285         $current_arg++;
 286       } elsif ($_ eq 'c') {
 287         my ($result1) = $args_res[$current_arg];
 288         if ($result1 eq "IGNORE") {
 289           $ignore_result_any = 1;
 290           $result1 = "0";
 291         } else {
 292           $ignore_result_all = 0;
 293         }
 294         my ($result2) = $args_res[$current_arg + 1];
 295         if ($result2 eq "IGNORE") {
 296           $ignore_result_any = 1;
 297           $result2 = "0";
 298         } else {
 299           $ignore_result_all = 0;
 300         }
 301         $cline_res .= ", $result1, $result2";
 302         $current_arg += 2;
 303       } elsif ($_ eq '1') {
 304         push @special, $args_res[$current_arg];
 305         ++$current_arg;
 306       }
 307     }
 308     if ($ignore_result_any && !$ignore_result_all) {
 309       die ("some but not all function results ignored\n");
 310     }
 311     # Determine whether any arguments or results, for any rounding
 312     # mode, are non-finite.
 313     $non_finite = ($args =~ /qnan_value|plus_infty|minus_infty/);
 314     # Add exceptions.
 315     $cline_res .= show_exceptions ($ignore_result_any,
 316                                    $non_finite,
 317                                    ($current_arg <= $#args_res)
 318                                    ? $args_res[$current_arg]
 319                                    : undef);
 320
 321     # special treatment for some functions
 322     $i = 0;
 323     foreach (@special) {
 324       ++$i;
 325       my ($extra_expected) = $_;
 326       my ($run_extra) = ($extra_expected ne "IGNORE" ? 1 : 0);
 327       if (!$run_extra) {
 328         $extra_expected = "0";
 329       }
 330       $cline_res .= ", $run_extra, $extra_expected";
 331     }
 332     $cline_res =~ s/^, //;
 333     $cline_res =~ s/plus_oflow/$plus_oflow[$rm]/g;
 334     $cline_res =~ s/minus_oflow/$minus_oflow[$rm]/g;
 335     $cline_res =~ s/plus_uflow/$plus_uflow[$rm]/g;
 336     $cline_res =~ s/minus_uflow/$minus_uflow[$rm]/g;
 337     $cline_res =~ s/ERRNO_PLUS_OFLOW/$errno_plus_oflow[$rm]/g;
 338     $cline_res =~ s/ERRNO_MINUS_OFLOW/$errno_minus_oflow[$rm]/g;
 339     $cline_res =~ s/ERRNO_PLUS_UFLOW/$errno_plus_uflow[$rm]/g;
 340     $cline_res =~ s/ERRNO_MINUS_UFLOW/$errno_minus_uflow[$rm]/g;
 341     $cline .= ", { $cline_res }";
 342   }
 343   print $file "    $cline },\n";
 344 }
 345
 346 # Convert a condition from auto-libm-test-out to C form.
 347 sub convert_condition {
 348   my ($cond) = @_;
 349   my (@conds, $ret);
 350   @conds = split /:/, $cond;
 351   foreach (@conds) {
 352     s/-/_/g;
 353     s/^/TEST_COND_/;
 354   }
 355   $ret = join " && ", @conds;
 356   return "($ret)";
 357 }
 358
 359 # Return text to OR a value into an accumulated flags string.
 360 sub or_value {
 361   my ($cond) = @_;
 362   if ($cond eq "0") {
 363     return "";
 364   } else {
 365     return " | $cond";
 366   }
 367 }
 368
 369 # Return a conditional expression between two values.
 370 sub cond_value {
 371   my ($cond, $if, $else) = @_;
 372   if ($cond eq "1") {
 373     return $if;
 374   } elsif ($cond eq "0") {
 375     return $else;
 376   } else {
 377     return "($cond ? $if : $else)";
 378   }
 379 }
 380
 381 # Return text to OR a conditional expression between two values into
 382 # an accumulated flags string.
 383 sub or_cond_value {
 384   my ($cond, $if, $else) = @_;
 385   return or_value (cond_value ($cond, $if, $else));
 386 }
 387
 388 # Generate libm-test.c
 389 sub generate_testfile {
 390   my ($input, $output) = @_;
 391
 392   open INPUT, $input or die ("Can't open $input: $!");
 393   open OUTPUT, ">$output" or die ("Can't open $output: $!");
 394
 395   # Replace the special macros
 396   while (<INPUT>) {
 397     # AUTO_TESTS (function),
 398     if (/^\s*AUTO_TESTS_/) {
 399       my ($descr, $func, @modes, $auto_test, $num_auto_tests);
 400       my (@rm_tests, $rm, $i);
 401       @modes = qw(downward tonearest towardzero upward);
 402       ($descr, $func) = ($_ =~ /AUTO_TESTS_(\w+)\s*\((\w+)\)/);
 403       for ($rm = 0; $rm <= 3; $rm++) {
 404         $rm_tests[$rm] = [sort keys %{$auto_tests{$func}{$modes[$rm]}}];
 405       }
 406       $num_auto_tests = scalar @{$rm_tests[0]};
 407       for ($rm = 1; $rm <= 3; $rm++) {
 408         if ($num_auto_tests != scalar @{$rm_tests[$rm]}) {
 409           die ("inconsistent numbers of tests for $func\n");
 410         }
 411         for ($i = 0; $i < $num_auto_tests; $i++) {
 412           if ($rm_tests[0][$i] ne $rm_tests[$rm][$i]) {
 413             die ("inconsistent list of tests of $func\n");
 414           }
 415         }
 416       }
 417       if ($num_auto_tests == 0) {
 418         die ("no automatic tests for $func\n");
 419       }
 420       foreach $auto_test (@{$rm_tests[0]}) {
 421         my ($format, $inputs, $format_conv, $args_str);
 422         ($format, $inputs) = split / /, $auto_test, 2;
 423         $inputs =~ s/ /, /g;
 424         $format_conv = convert_condition ($format);
 425         print OUTPUT "#if $format_conv\n";
 426         $args_str = "$func, $inputs";
 427         for ($rm = 0; $rm <= 3; $rm++) {
 428           my ($auto_test_out, $outputs, $flags);
 429           my ($flags_conv, @flags, %flag_cond);
 430           $auto_test_out = $auto_tests{$func}{$modes[$rm]}{$auto_test};
 431           ($outputs, $flags) = split / : */, $auto_test_out;
 432           $outputs =~ s/ /, /g;
 433           @flags = split / /, $flags;
 434           foreach (@flags) {
 435             if (/^([^:]*):(.*)$/) {
 436               my ($flag, $cond);
 437               $flag = $1;
 438               $cond = convert_condition ($2);
 439               if (defined ($flag_cond{$flag})) {
 440                 if ($flag_cond{$flag} ne "1") {
 441                   $flag_cond{$flag} .= " || $cond";
 442                 }
 443               } else {
 444                 $flag_cond{$flag} = $cond;
 445               }
 446             } else {
 447               $flag_cond{$_} = "1";
 448             }
 449           }
 450           $flags_conv = "";
 451           if (defined ($flag_cond{"ignore-zero-inf-sign"})) {
 452             $flags_conv .= or_cond_value ($flag_cond{"ignore-zero-inf-sign"},
 453                                           "IGNORE_ZERO_INF_SIGN", "0");
 454           }
 455           if (defined ($flag_cond{"no-test-inline"})) {
 456             $flags_conv .= or_cond_value ($flag_cond{"no-test-inline"},
 457                                           "NO_TEST_INLINE", "0");
 458           }
 459           if (defined ($flag_cond{"xfail"})) {
 460             $flags_conv .= or_cond_value ($flag_cond{"xfail"},
 461                                           "XFAIL_TEST", "0");
 462           }
 463           my (@exc_list) = qw(divbyzero inexact invalid overflow underflow);
 464           my ($exc);
 465           foreach $exc (@exc_list) {
 466             my ($exc_expected, $exc_ok, $no_exc, $exc_cond, $exc_ok_cond);
 467             $exc_expected = "\U$exc\E_EXCEPTION";
 468             $exc_ok = "\U$exc\E_EXCEPTION_OK";
 469             $no_exc = "0";
 470             if ($exc eq "inexact") {
 471               $exc_ok = "0";
 472               $no_exc = "NO_INEXACT_EXCEPTION";
 473             }
 474             if (defined ($flag_cond{$exc})) {
 475               $exc_cond = $flag_cond{$exc};
 476             } else {
 477               $exc_cond = "0";
 478             }
 479             if (defined ($flag_cond{"$exc-ok"})) {
 480               $exc_ok_cond = $flag_cond{"$exc-ok"};
 481             } else {
 482               $exc_ok_cond = "0";
 483             }
 484             $flags_conv .= or_cond_value ($exc_cond,
 485                                           cond_value ($exc_ok_cond,
 486                                                       $exc_ok, $exc_expected),
 487                                           cond_value ($exc_ok_cond,
 488                                                       $exc_ok, $no_exc));
 489           }
 490           my ($errno_expected, $errno_unknown_cond);
 491           if (defined ($flag_cond{"errno-edom"})) {
 492             if ($flag_cond{"errno-edom"} ne "1") {
 493               die ("unexpected condition for errno-edom");
 494             }
 495             if (defined ($flag_cond{"errno-erange"})) {
 496               die ("multiple errno values expected");
 497             }
 498             $errno_expected = "ERRNO_EDOM";
 499           } elsif (defined ($flag_cond{"errno-erange"})) {
 500             if ($flag_cond{"errno-erange"} ne "1") {
 501               die ("unexpected condition for errno-erange");
 502             }
 503             $errno_expected = "ERRNO_ERANGE";
 504           } else {
 505             $errno_expected = "ERRNO_UNCHANGED";
 506           }
 507           if (defined ($flag_cond{"errno-edom-ok"})) {
 508             if (defined ($flag_cond{"errno-erange-ok"})
 509                 && ($flag_cond{"errno-erange-ok"}
 510                     ne $flag_cond{"errno-edom-ok"})) {
 511               $errno_unknown_cond = "($flag_cond{\"errno-edom-ok\"} || $flag_cond{\"errno-erange-ok\"})";
 512             } else {
 513               $errno_unknown_cond = $flag_cond{"errno-edom-ok"};
 514             }
 515           } elsif (defined ($flag_cond{"errno-erange-ok"})) {
 516             $errno_unknown_cond = $flag_cond{"errno-erange-ok"};
 517           } else {
 518             $errno_unknown_cond = "0";
 519           }
 520           $flags_conv .= or_cond_value ($errno_unknown_cond,
 521                                         "0", $errno_expected);
 522           if ($flags_conv eq "") {
 523             $flags_conv = ", NO_EXCEPTION";
 524           } else {
 525             $flags_conv =~ s/^ \|/,/;
 526           }
 527           $args_str .= ", $outputs$flags_conv";
 528         }
 529         &parse_args (\*OUTPUT, $descr, $args_str);
 530         print OUTPUT "#endif\n";
 531       }
 532       next;
 533     }
 534
 535     # TEST_...
 536     if (/^\s*TEST_/) {
 537       my ($descr, $args);
 538       chop;
 539       ($descr, $args) = ($_ =~ /TEST_(\w+)\s*\((.*)\)/);
 540       &parse_args (\*OUTPUT, $descr, $args);
 541       next;
 542     }
 543     print OUTPUT;
 544   }
 545   close INPUT;
 546   close OUTPUT;
 547 }
 548
 549
 550
 551 # Parse ulps file
 552 sub parse_ulps {
 553   my ($file) = @_;
 554   my ($test, $type, $float, $eps);
 555
 556   # $type has the following values:
 557   # "normal": No complex variable
 558   # "real": Real part of complex result
 559   # "imag": Imaginary part of complex result
 560   open ULP, $file  or die ("Can't open $file: $!");
 561   while (<ULP>) {
 562     chop;
 563     # ignore comments and empty lines
 564     next if /^#/;
 565     next if /^\s*$/;
 566     if (/^Function: /) {
 567       if (/Real part of/) {
 568         s/Real part of //;
 569         $type = 'real';
 570       } elsif (/Imaginary part of/) {
 571         s/Imaginary part of //;
 572         $type = 'imag';
 573       } else {
 574         $type = 'normal';
 575       }
 576       ($test) = ($_ =~ /^Function:\s*\"([a-zA-Z0-9_]+)\"/);
 577       next;
 578     }
 579     if (/^i?(float|double|ldouble):/) {
 580       ($float, $eps) = split /\s*:\s*/,$_,2;
 581
 582       if ($eps eq "0") {
 583         # ignore
 584         next;
 585       } else {
 586         if (!defined ($results{$test}{$type}{'ulp'}{$float})
 587             || $results{$test}{$type}{'ulp'}{$float} < $eps) {
 588           $results{$test}{$type}{'ulp'}{$float} = $eps;
 589           $results{$test}{'has_ulps'} = 1;
 590         }
 591       }
 592       if ($type =~ /^real|imag$/) {
 593         $results{$test}{'type'} = 'complex';
 594       } elsif ($type eq 'normal') {
 595         $results{$test}{'type'} = 'normal';
 596       }
 597       next;
 598     }
 599     print "Skipping unknown entry: `$_'\n";
 600   }
 601   close ULP;
 602 }
 603
 604
 605 # Clean up a floating point number
 606 sub clean_up_number {
 607   my ($number) = @_;
 608
 609   # Remove trailing zeros after the decimal point
 610   if ($number =~ /\./) {
 611     $number =~ s/0+$//;
 612     $number =~ s/\.$//;
 613   }
 614   return $number;
 615 }
 616
 617 # Output a file which can be read in as ulps file.
 618 sub print_ulps_file {
 619   my ($file) = @_;
 620   my ($test, $type, $float, $eps, $fct, $last_fct);
 621
 622   $last_fct = '';
 623   open NEWULP, ">$file" or die ("Can't open $file: $!");
 624   print NEWULP "# Begin of automatic generation\n";
 625   print NEWULP "\n# Maximal error of functions:\n";
 626
 627   foreach $fct (sort keys %results) {
 628     foreach $type ('real', 'imag', 'normal') {
 629       if (exists $results{$fct}{$type}) {
 630         if ($type eq 'normal') {
 631           print NEWULP "Function: \"$fct\":\n";
 632         } elsif ($type eq 'real') {
 633           print NEWULP "Function: Real part of \"$fct\":\n";
 634         } elsif ($type eq 'imag') {
 635           print NEWULP "Function: Imaginary part of \"$fct\":\n";
 636         }
 637         foreach $float (@all_floats) {
 638           if (exists $results{$fct}{$type}{'ulp'}{$float}) {
 639             print NEWULP "$float: ",
 640             &clean_up_number ($results{$fct}{$type}{'ulp'}{$float}),
 641             "\n";
 642           }
 643         }
 644         print NEWULP "\n";
 645       }
 646     }
 647   }
 648   print NEWULP "# end of automatic generation\n";
 649   close NEWULP;
 650 }
 651
 652 sub get_ulps {
 653   my ($test, $type, $float) = @_;
 654
 655   return (exists $results{$test}{$type}{'ulp'}{$float}
 656           ? $results{$test}{$type}{'ulp'}{$float} : "0");
 657 }
 658
 659 # Return the ulps value for a single test.
 660 sub get_all_ulps_for_test {
 661   my ($test, $type) = @_;
 662   my ($ldouble, $double, $float, $ildouble, $idouble, $ifloat);
 663
 664   if (exists $results{$test}{'has_ulps'}) {
 665     # XXX use all_floats (change order!)
 666     $ldouble = &get_ulps ($test, $type, "ldouble");
 667     $double = &get_ulps ($test, $type, "double");
 668     $float = &get_ulps ($test, $type, "float");
 669     $ildouble = &get_ulps ($test, $type, "ildouble");
 670     $idouble = &get_ulps ($test, $type, "idouble");
 671     $ifloat = &get_ulps ($test, $type, "ifloat");
 672     return "CHOOSE ($ldouble, $double, $float, $ildouble, $idouble, $ifloat)";
 673   } else {
 674     die "get_all_ulps_for_test called for \"$test\" with no ulps\n";
 675   }
 676 }
 677
 678 # Print include file
 679 sub output_ulps {
 680   my ($file, $ulps_filename) = @_;
 681   my ($i, $fct, $type, $ulp, $ulp_real, $ulp_imag);
 682   my (%func_ulps, %func_real_ulps, %func_imag_ulps);
 683
 684   open ULP, ">$file" or die ("Can't open $file: $!");
 685
 686   print ULP "/* This file is automatically generated\n";
 687   print ULP "   from $ulps_filename with gen-libm-test.pl.\n";
 688   print ULP "   Don't change it - change instead the master files.  */\n\n";
 689
 690   foreach $fct (keys %results) {
 691     $type = $results{$fct}{'type'};
 692     if ($type eq 'normal') {
 693       $ulp = get_all_ulps_for_test ($fct, 'normal');
 694     } elsif ($type eq 'complex') {
 695       $ulp_real = get_all_ulps_for_test ($fct, 'real');
 696       $ulp_imag = get_all_ulps_for_test ($fct, 'imag');
 697     } else {
 698       die "unknown results ($fct) type $type\n";
 699     }
 700     if ($type eq 'normal') {
 701       $func_ulps{$fct} = $ulp;
 702     } else {
 703       $func_real_ulps{$fct} = $ulp_real;
 704       $func_imag_ulps{$fct} = $ulp_imag;
 705     }
 706   }
 707   print ULP "\n/* Maximal error of functions.  */\n";
 708   print ULP "static const struct ulp_data func_ulps[] =\n  {\n";
 709   foreach $fct (sort keys %func_ulps) {
 710     print ULP "    { \"$fct\", $func_ulps{$fct} },\n";
 711   }
 712   print ULP "  };\n";
 713   print ULP "static const struct ulp_data func_real_ulps[] =\n  {\n";
 714   foreach $fct (sort keys %func_real_ulps) {
 715     print ULP "    { \"$fct\", $func_real_ulps{$fct} },\n";
 716   }
 717   print ULP "  };\n";
 718   print ULP "static const struct ulp_data func_imag_ulps[] =\n  {\n";
 719   foreach $fct (sort keys %func_imag_ulps) {
 720     print ULP "    { \"$fct\", $func_imag_ulps{$fct} },\n";
 721   }
 722   print ULP "  };\n";
 723   close ULP;
 724 }
 725
 726 # Parse auto-libm-test-out.
 727 sub parse_auto_input {
 728   my ($file) = @_;
 729   open AUTO, $file or die ("Can't open $file: $!");
 730   while (<AUTO>) {
 731     chop;
 732     next if !/^= /;
 733     s/^= //;
 734     if (/^(\S+) (\S+) ([^:]*) : (.*)$/) {
 735       $auto_tests{$1}{$2}{$3} = $4;
 736     } else {
 737       die ("bad automatic test line: $_\n");
 738     }
 739   }
 740   close AUTO;
 741 }