math/gen-libm-test.pl

   1 #!/usr/bin/perl -w
   2 # Copyright (C) 1999-2014 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}{"kind"} is either "fct" or "test" and flags whether this
  25 # is a maximal error of a function or a single test.
  26 # $results{$test}{"type"} is the result type, e.g. normal or complex.
  27 # $results{$test}{"has_ulps"} is set if deltas exist.
  28 # In the following description $type and $float are:
  29 # - $type is either "normal", "real" (for the real part of a complex number)
  30 #   or "imag" (for the imaginary part # of a complex number).
  31 # - $float is either of float, ifloat, double, idouble, ldouble, ildouble;
  32 #   It represents the underlying floating point type (float, double or long
  33 #   double) and if inline functions (the leading i stands for inline)
  34 #   are used.
  35 # $results{$test}{$type}{"ulp"}{$float} is defined and has a delta as value
  36
  37
  38 use Getopt::Std;
  39
  40 use strict;
  41
  42 use vars qw ($input $output $auto_input);
  43 use vars qw (%results);
  44 use vars qw (%beautify @all_floats);
  45 use vars qw ($output_dir $ulps_file $srcdir);
  46 use vars qw (%auto_tests);
  47
  48 # all_floats is sorted and contains all recognised float types
  49 @all_floats = ('double', 'float', 'idouble',
  50                'ifloat', 'ildouble', 'ldouble');
  51
  52 %beautify =
  53   ( "minus_zero" => "-0",
  54     "plus_zero" => "+0",
  55     "-0x0p+0f" => "-0",
  56     "-0x0p+0" => "-0",
  57     "-0x0p+0L" => "-0",
  58     "0x0p+0f" => "+0",
  59     "0x0p+0" => "+0",
  60     "0x0p+0L" => "+0",
  61     "minus_infty" => "-inf",
  62     "plus_infty" => "inf",
  63     "qnan_value" => "qNaN",
  64   );
  65
  66
  67 # get Options
  68 # Options:
  69 # u: ulps-file
  70 # h: help
  71 # o: output-directory
  72 # n: generate new ulps file
  73 use vars qw($opt_u $opt_h $opt_o $opt_n);
  74 getopts('u:o:nh');
  75
  76 $ulps_file = 'libm-test-ulps';
  77 $output_dir = '';
  78 ($srcdir = $0) =~ s{[^/]*$}{};
  79
  80 if ($opt_h) {
  81   print "Usage: gen-libm-test.pl [OPTIONS]\n";
  82   print " -h         print this help, then exit\n";
  83   print " -o DIR     directory where generated files will be placed\n";
  84   print " -n         only generate sorted file NewUlps from libm-test-ulps\n";
  85   print " -u FILE    input file with ulps\n";
  86   exit 0;
  87 }
  88
  89 $ulps_file = $opt_u if ($opt_u);
  90 $output_dir = $opt_o if ($opt_o);
  91
  92 $input = "libm-test.inc";
  93 $auto_input = "${srcdir}auto-libm-test-out";
  94 $output = "${output_dir}libm-test.c";
  95
  96 &parse_ulps ($ulps_file);
  97 &parse_auto_input ($auto_input);
  98 &generate_testfile ($input, $output) unless ($opt_n);
  99 &output_ulps ("${output_dir}libm-test-ulps.h", $ulps_file) unless ($opt_n);
 100 &print_ulps_file ("${output_dir}NewUlps") if ($opt_n);
 101
 102 # Return a nicer representation
 103 sub beautify {
 104   my ($arg) = @_;
 105   my ($tmp);
 106
 107   if (exists $beautify{$arg}) {
 108     return $beautify{$arg};
 109   }
 110   if ($arg =~ /^-/) {
 111     $tmp = $arg;
 112     $tmp =~ s/^-//;
 113     if (exists $beautify{$tmp}) {
 114       return '-' . $beautify{$tmp};
 115     }
 116   }
 117   if ($arg =~ /^-?0x[0-9a-f.]*p[-+][0-9]+f$/) {
 118     $arg =~ s/f$//;
 119   }
 120   if ($arg =~ /[0-9]L$/) {
 121     $arg =~ s/L$//;
 122   }
 123   return $arg;
 124 }
 125
 126 # Return a nicer representation of a complex number
 127 sub build_complex_beautify {
 128   my ($r, $i) = @_;
 129   my ($str1, $str2);
 130
 131   $str1 = &beautify ($r);
 132   $str2 = &beautify ($i);
 133   if ($str2 =~ /^-/) {
 134     $str2 =~ s/^-//;
 135     $str1 .= ' - ' . $str2;
 136   } else {
 137     $str1 .= ' + ' . $str2;
 138   }
 139   $str1 .= ' i';
 140   return $str1;
 141 }
 142
 143 # Return the text to put in an initializer for a test's exception
 144 # information.
 145 sub show_exceptions {
 146   my ($ignore_result, $exception) = @_;
 147   $ignore_result = ($ignore_result ? "IGNORE_RESULT|" : "");
 148   if (defined $exception) {
 149     return ", ${ignore_result}$exception";
 150   } else {
 151     return ", ${ignore_result}0";
 152   }
 153 }
 154
 155 # Parse the arguments to TEST_x_y
 156 sub parse_args {
 157   my ($file, $descr, $args) = @_;
 158   my (@args, $descr_args, $descr_res, @descr);
 159   my ($current_arg, $cline, $i);
 160   my (@special);
 161   my ($call_args);
 162   my ($ignore_result_any, $ignore_result_all);
 163
 164   ($descr_args, $descr_res) = split /_/,$descr, 2;
 165
 166   @args = split /,\s*/, $args;
 167
 168   $call_args = "";
 169
 170   # Generate first the string that's shown to the user
 171   $current_arg = 1;
 172   @descr = split //,$descr_args;
 173   for ($i = 0; $i <= $#descr; $i++) {
 174     my $comma = "";
 175     if ($current_arg > 1) {
 176       $comma = ', ';
 177     }
 178     # FLOAT, int, long int, long long int
 179     if ($descr[$i] =~ /f|i|l|L/) {
 180       $call_args .= $comma . &beautify ($args[$current_arg]);
 181       ++$current_arg;
 182       next;
 183     }
 184     # &FLOAT, &int - simplify call by not showing argument.
 185     if ($descr[$i] =~ /F|I/) {
 186       next;
 187     }
 188     # complex
 189     if ($descr[$i] eq 'c') {
 190       $call_args .= $comma . &build_complex_beautify ($args[$current_arg], $args[$current_arg+1]);
 191       $current_arg += 2;
 192       next;
 193     }
 194
 195     die ("$descr[$i] is unknown");
 196   }
 197
 198   # Result
 199   @descr = split //,$descr_res;
 200   foreach (@descr) {
 201     if ($_ =~ /f|i|l|L/) {
 202       ++$current_arg;
 203     } elsif ($_ eq 'c') {
 204       $current_arg += 2;
 205     } elsif ($_ eq 'b') {
 206       # boolean
 207       ++$current_arg;
 208     } elsif ($_ eq '1') {
 209       ++$current_arg;
 210     } else {
 211       die ("$_ is unknown");
 212     }
 213   }
 214   # consistency check
 215   if ($current_arg == $#args) {
 216     die ("wrong number of arguments")
 217       unless ($args[$current_arg] =~ /EXCEPTION|ERRNO|IGNORE_ZERO_INF_SIGN|TEST_NAN_SIGN|NO_TEST_INLINE|XFAIL_TEST/);
 218   } elsif ($current_arg < $#args) {
 219     die ("wrong number of arguments");
 220   } elsif ($current_arg > ($#args+1)) {
 221     die ("wrong number of arguments");
 222   }
 223
 224
 225   # Put the C program line together
 226   # Reset some variables to start again
 227   $current_arg = 1;
 228   $cline = "{ \"$call_args\"";
 229   @descr = split //,$descr_args;
 230   for ($i=0; $i <= $#descr; $i++) {
 231     # FLOAT, int, long int, long long int
 232     if ($descr[$i] =~ /f|i|l|L/) {
 233       $cline .= ", $args[$current_arg]";
 234       $current_arg++;
 235       next;
 236     }
 237     # &FLOAT, &int
 238     if ($descr[$i] =~ /F|I/) {
 239       next;
 240     }
 241     # complex
 242     if ($descr[$i] eq 'c') {
 243       $cline .= ", $args[$current_arg], $args[$current_arg+1]";
 244       $current_arg += 2;
 245       next;
 246     }
 247   }
 248
 249   @descr = split //,$descr_res;
 250   $ignore_result_any = 0;
 251   $ignore_result_all = 1;
 252   foreach (@descr) {
 253     if ($_ =~ /b|f|i|l|L/ ) {
 254       my ($result) = $args[$current_arg];
 255       if ($result eq "IGNORE") {
 256         $ignore_result_any = 1;
 257         $result = "0";
 258       } else {
 259         $ignore_result_all = 0;
 260       }
 261       $cline .= ", $result";
 262       $current_arg++;
 263     } elsif ($_ eq 'c') {
 264       my ($result1) = $args[$current_arg];
 265       if ($result1 eq "IGNORE") {
 266         $ignore_result_any = 1;
 267         $result1 = "0";
 268       } else {
 269         $ignore_result_all = 0;
 270       }
 271       my ($result2) = $args[$current_arg + 1];
 272       if ($result2 eq "IGNORE") {
 273         $ignore_result_any = 1;
 274         $result2 = "0";
 275       } else {
 276         $ignore_result_all = 0;
 277       }
 278       $cline .= ", $result1, $result2";
 279       $current_arg += 2;
 280     } elsif ($_ eq '1') {
 281       push @special, $args[$current_arg];
 282       ++$current_arg;
 283     }
 284   }
 285   if ($ignore_result_any && !$ignore_result_all) {
 286     die ("some but not all function results ignored\n");
 287   }
 288   # Add exceptions.
 289   $cline .= show_exceptions ($ignore_result_any,
 290                              ($current_arg <= $#args)
 291                              ? $args[$current_arg]
 292                              : undef);
 293
 294   # special treatment for some functions
 295   $i = 0;
 296   foreach (@special) {
 297     ++$i;
 298     my ($extra_expected) = $_;
 299     my ($run_extra) = ($extra_expected ne "IGNORE" ? 1 : 0);
 300     if (!$run_extra) {
 301       $extra_expected = "0";
 302     }
 303     $cline .= ", $run_extra, $extra_expected";
 304   }
 305   print $file "    $cline },\n";
 306 }
 307
 308 # Convert a condition from auto-libm-test-out to C form.
 309 sub convert_condition {
 310   my ($cond) = @_;
 311   my (@conds, $ret);
 312   @conds = split /:/, $cond;
 313   foreach (@conds) {
 314     s/-/_/g;
 315     s/^/TEST_COND_/;
 316   }
 317   $ret = join " && ", @conds;
 318   return "($ret)";
 319 }
 320
 321 # Return text to OR a value into an accumulated flags string.
 322 sub or_value {
 323   my ($cond) = @_;
 324   if ($cond eq "0") {
 325     return "";
 326   } else {
 327     return " | $cond";
 328   }
 329 }
 330
 331 # Return text to OR a conditional expression between two values into
 332 # an accumulated flags string.
 333 sub or_cond_value {
 334   my ($cond, $if, $else) = @_;
 335   if ($cond eq "1") {
 336     return or_value ($if);
 337   } elsif ($cond eq "0") {
 338     return or_value ($else);
 339   } else {
 340     return or_value ("($cond ? $if : $else)");
 341   }
 342 }
 343
 344 # Generate libm-test.c
 345 sub generate_testfile {
 346   my ($input, $output) = @_;
 347
 348   open INPUT, $input or die ("Can't open $input: $!");
 349   open OUTPUT, ">$output" or die ("Can't open $output: $!");
 350
 351   # Replace the special macros
 352   while (<INPUT>) {
 353     # AUTO_TESTS (function, mode),
 354     if (/^\s*AUTO_TESTS_/) {
 355       my ($descr, $func, $mode, $auto_test, $num_auto_tests);
 356       ($descr, $func, $mode) = ($_ =~ /AUTO_TESTS_(\w+)\s*\((\w+),\s*(\w+)\)/);
 357       $num_auto_tests = 0;
 358       foreach $auto_test (sort keys %{$auto_tests{$func}{$mode}}) {
 359         my ($finputs, $format, $inputs, $outputs, $flags);
 360         my ($format_conv, $flags_conv, @flags, %flag_cond);
 361         $num_auto_tests++;
 362         ($finputs, $outputs, $flags) = split / : */, $auto_test;
 363         ($format, $inputs) = split / /, $finputs, 2;
 364         $inputs =~ s/ /, /g;
 365         $outputs =~ s/ /, /g;
 366         $format_conv = convert_condition ($format);
 367         print OUTPUT "#if $format_conv\n";
 368         @flags = split / /, $flags;
 369         foreach (@flags) {
 370           if (/^([^:]*):(.*)$/) {
 371             my ($flag, $cond);
 372             $flag = $1;
 373             $cond = convert_condition ($2);
 374             if (defined ($flag_cond{$flag})) {
 375               if ($flag_cond{$flag} ne "1") {
 376                 $flag_cond{$flag} .= " || $cond";
 377               }
 378             } else {
 379               $flag_cond{$flag} = $cond;
 380             }
 381           } else {
 382             $flag_cond{$_} = "1";
 383           }
 384         }
 385         $flags_conv = "";
 386         if (defined ($flag_cond{"no-test-inline"})) {
 387           $flags_conv .= or_cond_value ($flag_cond{"no-test-inline"},
 388                                         "NO_TEST_INLINE", "0");
 389         }
 390         if (defined ($flag_cond{"xfail"})) {
 391           $flags_conv .= or_cond_value ($flag_cond{"xfail"},
 392                                         "XFAIL_TEST", "0");
 393         }
 394         my (@exc_list) = qw(divbyzero inexact invalid overflow underflow);
 395         my ($exc);
 396         foreach $exc (@exc_list) {
 397           my ($exc_expected, $exc_ok, $no_exc);
 398           $exc_expected = "\U$exc\E_EXCEPTION";
 399           $exc_ok = "\U$exc\E_EXCEPTION_OK";
 400           $no_exc = "0";
 401           if ($exc eq "inexact") {
 402             $exc_ok = "0";
 403             $no_exc = "NO_INEXACT_EXCEPTION";
 404           }
 405           if (defined ($flag_cond{$exc})) {
 406             if ($flag_cond{$exc} ne "1") {
 407               die ("unexpected condition for $exc\n");
 408             }
 409             if (defined ($flag_cond{"$exc-ok"})) {
 410               $flags_conv .= or_cond_value ($flag_cond{"$exc-ok"},
 411                                             $exc_ok, $exc_expected);
 412             } else {
 413               $flags_conv .= or_value ($exc_expected);
 414             }
 415           } else {
 416             if (defined ($flag_cond{"$exc-ok"})) {
 417               $flags_conv .= or_cond_value ($flag_cond{"$exc-ok"},
 418                                             $exc_ok, $no_exc);
 419             } else {
 420               $flags_conv .= or_value ($no_exc);
 421             }
 422           }
 423         }
 424         my ($errno_expected, $errno_unknown_cond);
 425         if (defined ($flag_cond{"errno-edom"})) {
 426           if ($flag_cond{"errno-edom"} ne "1") {
 427             die ("unexpected condition for errno-edom");
 428           }
 429           if (defined ($flag_cond{"errno-erange"})) {
 430             die ("multiple errno values expected");
 431           }
 432           $errno_expected = "ERRNO_EDOM";
 433         } elsif (defined ($flag_cond{"errno-erange"})) {
 434           if ($flag_cond{"errno-erange"} ne "1") {
 435             die ("unexpected condition for errno-erange");
 436           }
 437           $errno_expected = "ERRNO_ERANGE";
 438         } else {
 439           $errno_expected = "ERRNO_UNCHANGED";
 440         }
 441         if (defined ($flag_cond{"errno-edom-ok"})) {
 442           if (defined ($flag_cond{"errno-erange-ok"})
 443               && $flag_cond{"errno-erange-ok"} ne $flag_cond{"errno-edom-ok"}) {
 444             $errno_unknown_cond = "($flag_cond{\"errno-edom-ok\"} || $flag_cond{\"errno-erange-ok\"})";
 445           } else {
 446             $errno_unknown_cond = $flag_cond{"errno-edom-ok"};
 447           }
 448         } elsif (defined ($flag_cond{"errno-erange-ok"})) {
 449           $errno_unknown_cond = $flag_cond{"errno-erange-ok"};
 450         } else {
 451           $errno_unknown_cond = "0";
 452         }
 453         $flags_conv .= or_cond_value ($errno_unknown_cond,
 454                                       "0", $errno_expected);
 455         if ($flags_conv ne "") {
 456           $flags_conv =~ s/^ \|/,/;
 457         }
 458         &parse_args (\*OUTPUT, $descr,
 459                      "$func, $inputs, $outputs$flags_conv");
 460         print OUTPUT "#endif\n";
 461       }
 462       if ($num_auto_tests == 0) {
 463         die ("no automatic tests for $func, $mode\n");
 464       }
 465       next;
 466     }
 467
 468     # TEST_...
 469     if (/^\s*TEST_/) {
 470       my ($descr, $args);
 471       chop;
 472       ($descr, $args) = ($_ =~ /TEST_(\w+)\s*\((.*)\)/);
 473       &parse_args (\*OUTPUT, $descr, $args);
 474       next;
 475     }
 476     print OUTPUT;
 477   }
 478   close INPUT;
 479   close OUTPUT;
 480 }
 481
 482
 483
 484 # Parse ulps file
 485 sub parse_ulps {
 486   my ($file) = @_;
 487   my ($test, $type, $float, $eps, $kind);
 488
 489   # $type has the following values:
 490   # "normal": No complex variable
 491   # "real": Real part of complex result
 492   # "imag": Imaginary part of complex result
 493   open ULP, $file  or die ("Can't open $file: $!");
 494   while (<ULP>) {
 495     chop;
 496     # ignore comments and empty lines
 497     next if /^#/;
 498     next if /^\s*$/;
 499     if (/^Test/) {
 500       if (/Real part of:/) {
 501         s/Real part of: //;
 502         $type = 'real';
 503       } elsif (/Imaginary part of:/) {
 504         s/Imaginary part of: //;
 505         $type = 'imag';
 506       } else {
 507         $type = 'normal';
 508       }
 509       s/^.+\"(.*)\".*$/$1/;
 510       $test = $_;
 511       $kind = 'test';
 512       next;
 513     }
 514     if (/^Function: /) {
 515       if (/Real part of/) {
 516         s/Real part of //;
 517         $type = 'real';
 518       } elsif (/Imaginary part of/) {
 519         s/Imaginary part of //;
 520         $type = 'imag';
 521       } else {
 522         $type = 'normal';
 523       }
 524       ($test) = ($_ =~ /^Function:\s*\"([a-zA-Z0-9_]+)\"/);
 525       $kind = 'fct';
 526       next;
 527     }
 528     if (/^i?(float|double|ldouble):/) {
 529       ($float, $eps) = split /\s*:\s*/,$_,2;
 530
 531       if ($eps eq "0") {
 532         # ignore
 533         next;
 534       } else {
 535         $results{$test}{$type}{'ulp'}{$float} = $eps;
 536         $results{$test}{'has_ulps'} = 1;
 537       }
 538       if ($type =~ /^real|imag$/) {
 539         $results{$test}{'type'} = 'complex';
 540       } elsif ($type eq 'normal') {
 541         $results{$test}{'type'} = 'normal';
 542       }
 543       $results{$test}{'kind'} = $kind;
 544       next;
 545     }
 546     print "Skipping unknown entry: `$_'\n";
 547   }
 548   close ULP;
 549 }
 550
 551
 552 # Clean up a floating point number
 553 sub clean_up_number {
 554   my ($number) = @_;
 555
 556   # Remove trailing zeros after the decimal point
 557   if ($number =~ /\./) {
 558     $number =~ s/0+$//;
 559     $number =~ s/\.$//;
 560   }
 561   return $number;
 562 }
 563
 564 # Output a file which can be read in as ulps file.
 565 sub print_ulps_file {
 566   my ($file) = @_;
 567   my ($test, $type, $float, $eps, $fct, $last_fct);
 568
 569   $last_fct = '';
 570   open NEWULP, ">$file" or die ("Can't open $file: $!");
 571   print NEWULP "# Begin of automatic generation\n";
 572   # first the function calls
 573   foreach $test (sort keys %results) {
 574     next if ($results{$test}{'kind'} ne 'test');
 575     foreach $type ('real', 'imag', 'normal') {
 576       if (exists $results{$test}{$type}) {
 577         if (defined $results{$test}) {
 578           ($fct) = ($test =~ /^(\w+)\s/);
 579           if ($fct ne $last_fct) {
 580             $last_fct = $fct;
 581             print NEWULP "\n# $fct\n";
 582           }
 583         }
 584         if ($type eq 'normal') {
 585           print NEWULP "Test \"$test\":\n";
 586         } elsif ($type eq 'real') {
 587           print NEWULP "Test \"Real part of: $test\":\n";
 588         } elsif ($type eq 'imag') {
 589           print NEWULP "Test \"Imaginary part of: $test\":\n";
 590         }
 591         foreach $float (@all_floats) {
 592           if (exists $results{$test}{$type}{'ulp'}{$float}) {
 593             print NEWULP "$float: ",
 594             &clean_up_number ($results{$test}{$type}{'ulp'}{$float}),
 595             "\n";
 596           }
 597         }
 598       }
 599     }
 600   }
 601   print NEWULP "\n# Maximal error of functions:\n";
 602
 603   foreach $fct (sort keys %results) {
 604     next if ($results{$fct}{'kind'} ne 'fct');
 605     foreach $type ('real', 'imag', 'normal') {
 606       if (exists $results{$fct}{$type}) {
 607         if ($type eq 'normal') {
 608           print NEWULP "Function: \"$fct\":\n";
 609         } elsif ($type eq 'real') {
 610           print NEWULP "Function: Real part of \"$fct\":\n";
 611         } elsif ($type eq 'imag') {
 612           print NEWULP "Function: Imaginary part of \"$fct\":\n";
 613         }
 614         foreach $float (@all_floats) {
 615           if (exists $results{$fct}{$type}{'ulp'}{$float}) {
 616             print NEWULP "$float: ",
 617             &clean_up_number ($results{$fct}{$type}{'ulp'}{$float}),
 618             "\n";
 619           }
 620         }
 621         print NEWULP "\n";
 622       }
 623     }
 624   }
 625   print NEWULP "# end of automatic generation\n";
 626   close NEWULP;
 627 }
 628
 629 sub get_ulps {
 630   my ($test, $type, $float) = @_;
 631
 632   return (exists $results{$test}{$type}{'ulp'}{$float}
 633           ? $results{$test}{$type}{'ulp'}{$float} : "0");
 634 }
 635
 636 # Return the ulps value for a single test.
 637 sub get_all_ulps_for_test {
 638   my ($test, $type) = @_;
 639   my ($ldouble, $double, $float, $ildouble, $idouble, $ifloat);
 640
 641   if (exists $results{$test}{'has_ulps'}) {
 642     # XXX use all_floats (change order!)
 643     $ldouble = &get_ulps ($test, $type, "ldouble");
 644     $double = &get_ulps ($test, $type, "double");
 645     $float = &get_ulps ($test, $type, "float");
 646     $ildouble = &get_ulps ($test, $type, "ildouble");
 647     $idouble = &get_ulps ($test, $type, "idouble");
 648     $ifloat = &get_ulps ($test, $type, "ifloat");
 649     return "CHOOSE ($ldouble, $double, $float, $ildouble, $idouble, $ifloat)";
 650   } else {
 651     die "get_all_ulps_for_test called for \"$test\" with no ulps\n";
 652   }
 653 }
 654
 655 # Print include file
 656 sub output_ulps {
 657   my ($file, $ulps_filename) = @_;
 658   my ($i, $fct, $type, $ulp, $ulp_real, $ulp_imag);
 659   my (%test_ulps, %func_ulps, %func_real_ulps, %func_imag_ulps);
 660
 661   open ULP, ">$file" or die ("Can't open $file: $!");
 662
 663   print ULP "/* This file is automatically generated\n";
 664   print ULP "   from $ulps_filename with gen-libm-test.pl.\n";
 665   print ULP "   Don't change it - change instead the master files.  */\n\n";
 666
 667   foreach $fct (keys %results) {
 668     $type = $results{$fct}{'type'};
 669     if ($type eq 'normal') {
 670       $ulp = get_all_ulps_for_test ($fct, 'normal');
 671     } elsif ($type eq 'complex') {
 672       $ulp_real = get_all_ulps_for_test ($fct, 'real');
 673       $ulp_imag = get_all_ulps_for_test ($fct, 'imag');
 674     } else {
 675       die "unknown results ($fct) type $type\n";
 676     }
 677     if ($results{$fct}{'kind'} eq 'fct') {
 678       if ($type eq 'normal') {
 679         $func_ulps{$fct} = $ulp;
 680       } else {
 681         $func_real_ulps{$fct} = $ulp_real;
 682         $func_imag_ulps{$fct} = $ulp_imag;
 683       }
 684     } elsif ($results{$fct}{'kind'} eq 'test') {
 685       if ($type eq 'normal') {
 686         $test_ulps{$fct} = $ulp;
 687       } else {
 688         $test_ulps{"Real part of: $fct"} = $ulp_real;
 689         $test_ulps{"Imaginary part of: $fct"} = $ulp_imag;
 690       }
 691     } else {
 692       die "unknown results ($fct) kind $results{$fct}{'kind'}\n";
 693     }
 694   }
 695   print ULP "\n/* Maximal error of functions.  */\n";
 696   print ULP "static const struct ulp_data func_ulps[] =\n  {\n";
 697   foreach $fct (sort keys %func_ulps) {
 698     print ULP "    { \"$fct\", $func_ulps{$fct} },\n";
 699   }
 700   print ULP "  };\n";
 701   print ULP "static const struct ulp_data func_real_ulps[] =\n  {\n";
 702   foreach $fct (sort keys %func_real_ulps) {
 703     print ULP "    { \"$fct\", $func_real_ulps{$fct} },\n";
 704   }
 705   print ULP "  };\n";
 706   print ULP "static const struct ulp_data func_imag_ulps[] =\n  {\n";
 707   foreach $fct (sort keys %func_imag_ulps) {
 708     print ULP "    { \"$fct\", $func_imag_ulps{$fct} },\n";
 709   }
 710   print ULP "  };\n";
 711
 712   print ULP "\n/* Error of single function calls.  */\n";
 713   print ULP "static const struct ulp_data test_ulps[] =\n  {\n";
 714   foreach $fct (sort keys %test_ulps) {
 715     print ULP "    { \"$fct\", $test_ulps{$fct} },\n";
 716   }
 717   print ULP "  };\n";
 718   close ULP;
 719 }
 720
 721 # Parse auto-libm-test-out.
 722 sub parse_auto_input {
 723   my ($file) = @_;
 724   open AUTO, $file or die ("Can't open $file: $!");
 725   while (<AUTO>) {
 726     chop;
 727     next if !/^= /;
 728     s/^= //;
 729     if (/^(\S+) (\S+) (.*)$/) {
 730       $auto_tests{$1}{$2}{$3} = 1;
 731     } else {
 732       die ("bad automatic test line: $_\n");
 733     }
 734   }
 735   close AUTO;
 736 }