math/gen-libm-test.pl

   1 #!/usr/bin/perl -w
   2 # Copyright (C) 1999-2013 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 $ulps_file);
  46 use vars qw (%auto_tests);
  47
  48 # all_floats is sorted and contains all recognised float types
  49 @all_floats = ('double', 'float', 'idouble',
  50                'ifloat', 'ildouble', 'ldouble');
  51
  52 %beautify =
  53   ( "minus_zero" => "-0",
  54     "plus_zero" => "+0",
  55     "-0x0p+0f" => "-0",
  56     "-0x0p+0" => "-0",
  57     "-0x0p+0L" => "-0",
  58     "0x0p+0f" => "+0",
  59     "0x0p+0" => "+0",
  60     "0x0p+0L" => "+0",
  61     "minus_infty" => "-inf",
  62     "plus_infty" => "inf",
  63     "qnan_value" => "qNaN",
  64   );
  65
  66
  67 # get Options
  68 # Options:
  69 # u: ulps-file
  70 # h: help
  71 # o: output-directory
  72 # n: generate new ulps file
  73 use vars qw($opt_u $opt_h $opt_o $opt_n);
  74 getopts('u:o:nh');
  75
  76 $ulps_file = 'libm-test-ulps';
  77 $output_dir = '';
  78
  79 if ($opt_h) {
  80   print "Usage: gen-libm-test.pl [OPTIONS]\n";
  81   print " -h         print this help, then exit\n";
  82   print " -o DIR     directory where generated files will be placed\n";
  83   print " -n         only generate sorted file NewUlps from libm-test-ulps\n";
  84   print " -u FILE    input file with ulps\n";
  85   exit 0;
  86 }
  87
  88 $ulps_file = $opt_u if ($opt_u);
  89 $output_dir = $opt_o if ($opt_o);
  90
  91 $input = "libm-test.inc";
  92 $auto_input = "auto-libm-test-out";
  93 $output = "${output_dir}libm-test.c";
  94
  95 &parse_ulps ($ulps_file);
  96 &parse_auto_input ($auto_input);
  97 &generate_testfile ($input, $output) unless ($opt_n);
  98 &output_ulps ("${output_dir}libm-test-ulps.h", $ulps_file) unless ($opt_n);
  99 &print_ulps_file ("${output_dir}NewUlps") if ($opt_n);
 100
 101 # Return a nicer representation
 102 sub beautify {
 103   my ($arg) = @_;
 104   my ($tmp);
 105
 106   if (exists $beautify{$arg}) {
 107     return $beautify{$arg};
 108   }
 109   if ($arg =~ /^-/) {
 110     $tmp = $arg;
 111     $tmp =~ s/^-//;
 112     if (exists $beautify{$tmp}) {
 113       return '-' . $beautify{$tmp};
 114     }
 115   }
 116   if ($arg =~ /^-?0x[0-9a-f.]*p[-+][0-9]+f$/) {
 117     $arg =~ s/f$//;
 118   }
 119   if ($arg =~ /[0-9]L$/) {
 120     $arg =~ s/L$//;
 121   }
 122   return $arg;
 123 }
 124
 125 # Return a nicer representation of a complex number
 126 sub build_complex_beautify {
 127   my ($r, $i) = @_;
 128   my ($str1, $str2);
 129
 130   $str1 = &beautify ($r);
 131   $str2 = &beautify ($i);
 132   if ($str2 =~ /^-/) {
 133     $str2 =~ s/^-//;
 134     $str1 .= ' - ' . $str2;
 135   } else {
 136     $str1 .= ' + ' . $str2;
 137   }
 138   $str1 .= ' i';
 139   return $str1;
 140 }
 141
 142 # Return the text to put in an initializer for a test's exception
 143 # information.
 144 sub show_exceptions {
 145   my ($ignore_result, $exception) = @_;
 146   $ignore_result = ($ignore_result ? "IGNORE_RESULT|" : "");
 147   if (defined $exception) {
 148     return ", ${ignore_result}$exception";
 149   } else {
 150     return ", ${ignore_result}0";
 151   }
 152 }
 153
 154 # Parse the arguments to TEST_x_y
 155 sub parse_args {
 156   my ($file, $descr, $args) = @_;
 157   my (@args, $descr_args, $descr_res, @descr);
 158   my ($current_arg, $cline, $i);
 159   my (@special);
 160   my ($call_args);
 161   my ($ignore_result_any, $ignore_result_all);
 162
 163   ($descr_args, $descr_res) = split /_/,$descr, 2;
 164
 165   @args = split /,\s*/, $args;
 166
 167   $call_args = "";
 168
 169   # Generate first the string that's shown to the user
 170   $current_arg = 1;
 171   @descr = split //,$descr_args;
 172   for ($i = 0; $i <= $#descr; $i++) {
 173     my $comma = "";
 174     if ($current_arg > 1) {
 175       $comma = ', ';
 176     }
 177     # FLOAT, int, long int, long long int
 178     if ($descr[$i] =~ /f|i|l|L/) {
 179       $call_args .= $comma . &beautify ($args[$current_arg]);
 180       ++$current_arg;
 181       next;
 182     }
 183     # &FLOAT, &int - simplify call by not showing argument.
 184     if ($descr[$i] =~ /F|I/) {
 185       next;
 186     }
 187     # complex
 188     if ($descr[$i] eq 'c') {
 189       $call_args .= $comma . &build_complex_beautify ($args[$current_arg], $args[$current_arg+1]);
 190       $current_arg += 2;
 191       next;
 192     }
 193
 194     die ("$descr[$i] is unknown");
 195   }
 196
 197   # Result
 198   @descr = split //,$descr_res;
 199   foreach (@descr) {
 200     if ($_ =~ /f|i|l|L/) {
 201       ++$current_arg;
 202     } elsif ($_ eq 'c') {
 203       $current_arg += 2;
 204     } elsif ($_ eq 'b') {
 205       # boolean
 206       ++$current_arg;
 207     } elsif ($_ eq '1') {
 208       ++$current_arg;
 209     } else {
 210       die ("$_ is unknown");
 211     }
 212   }
 213   # consistency check
 214   if ($current_arg == $#args) {
 215     die ("wrong number of arguments")
 216       unless ($args[$current_arg] =~ /EXCEPTION|ERRNO|IGNORE_ZERO_INF_SIGN|TEST_NAN_SIGN|NO_TEST_INLINE|XFAIL_TEST/);
 217   } elsif ($current_arg < $#args) {
 218     die ("wrong number of arguments");
 219   } elsif ($current_arg > ($#args+1)) {
 220     die ("wrong number of arguments");
 221   }
 222
 223
 224   # Put the C program line together
 225   # Reset some variables to start again
 226   $current_arg = 1;
 227   $cline = "{ \"$call_args\"";
 228   @descr = split //,$descr_args;
 229   for ($i=0; $i <= $#descr; $i++) {
 230     # FLOAT, int, long int, long long int
 231     if ($descr[$i] =~ /f|i|l|L/) {
 232       $cline .= ", $args[$current_arg]";
 233       $current_arg++;
 234       next;
 235     }
 236     # &FLOAT, &int
 237     if ($descr[$i] =~ /F|I/) {
 238       next;
 239     }
 240     # complex
 241     if ($descr[$i] eq 'c') {
 242       $cline .= ", $args[$current_arg], $args[$current_arg+1]";
 243       $current_arg += 2;
 244       next;
 245     }
 246   }
 247
 248   @descr = split //,$descr_res;
 249   $ignore_result_any = 0;
 250   $ignore_result_all = 1;
 251   foreach (@descr) {
 252     if ($_ =~ /b|f|i|l|L/ ) {
 253       my ($result) = $args[$current_arg];
 254       if ($result eq "IGNORE") {
 255         $ignore_result_any = 1;
 256         $result = "0";
 257       } else {
 258         $ignore_result_all = 0;
 259       }
 260       $cline .= ", $result";
 261       $current_arg++;
 262     } elsif ($_ eq 'c') {
 263       my ($result1) = $args[$current_arg];
 264       if ($result1 eq "IGNORE") {
 265         $ignore_result_any = 1;
 266         $result1 = "0";
 267       } else {
 268         $ignore_result_all = 0;
 269       }
 270       my ($result2) = $args[$current_arg + 1];
 271       if ($result2 eq "IGNORE") {
 272         $ignore_result_any = 1;
 273         $result2 = "0";
 274       } else {
 275         $ignore_result_all = 0;
 276       }
 277       $cline .= ", $result1, $result2";
 278       $current_arg += 2;
 279     } elsif ($_ eq '1') {
 280       push @special, $args[$current_arg];
 281       ++$current_arg;
 282     }
 283   }
 284   if ($ignore_result_any && !$ignore_result_all) {
 285     die ("some but not all function results ignored\n");
 286   }
 287   # Add exceptions.
 288   $cline .= show_exceptions ($ignore_result_any,
 289                              ($current_arg <= $#args)
 290                              ? $args[$current_arg]
 291                              : undef);
 292
 293   # special treatment for some functions
 294   $i = 0;
 295   foreach (@special) {
 296     ++$i;
 297     my ($extra_expected) = $_;
 298     my ($run_extra) = ($extra_expected ne "IGNORE" ? 1 : 0);
 299     if (!$run_extra) {
 300       $extra_expected = "0";
 301     }
 302     $cline .= ", $run_extra, $extra_expected";
 303   }
 304   print $file "    $cline },\n";
 305 }
 306
 307 # Convert a condition from auto-libm-test-out to C form.
 308 sub convert_condition {
 309   my ($cond) = @_;
 310   my (@conds, $ret);
 311   @conds = split /:/, $cond;
 312   foreach (@conds) {
 313     s/-/_/g;
 314     s/^/TEST_COND_/;
 315   }
 316   $ret = join " && ", @conds;
 317   return "($ret)";
 318 }
 319
 320 # Return text to OR a value into an accumulated flags string.
 321 sub or_value {
 322   my ($cond) = @_;
 323   if ($cond eq "0") {
 324     return "";
 325   } else {
 326     return " | $cond";
 327   }
 328 }
 329
 330 # Return text to OR a conditional expression between two values into
 331 # an accumulated flags string.
 332 sub or_cond_value {
 333   my ($cond, $if, $else) = @_;
 334   if ($cond eq "1") {
 335     return or_value ($if);
 336   } elsif ($cond eq "0") {
 337     return or_value ($else);
 338   } else {
 339     return or_value ("($cond ? $if : $else)");
 340   }
 341 }
 342
 343 # Generate libm-test.c
 344 sub generate_testfile {
 345   my ($input, $output) = @_;
 346
 347   open INPUT, $input or die ("Can't open $input: $!");
 348   open OUTPUT, ">$output" or die ("Can't open $output: $!");
 349
 350   # Replace the special macros
 351   while (<INPUT>) {
 352     # AUTO_TESTS (function, mode),
 353     if (/^\s*AUTO_TESTS_/) {
 354       my ($descr, $func, $mode, $auto_test, $num_auto_tests);
 355       ($descr, $func, $mode) = ($_ =~ /AUTO_TESTS_(\w+)\s*\((\w+),\s*(\w+)\)/);
 356       $num_auto_tests = 0;
 357       foreach $auto_test (sort keys %{$auto_tests{$func}{$mode}}) {
 358         my ($finputs, $format, $inputs, $outputs, $flags);
 359         my ($format_conv, $flags_conv, @flags, %flag_cond);
 360         $num_auto_tests++;
 361         ($finputs, $outputs, $flags) = split / : */, $auto_test;
 362         ($format, $inputs) = split / /, $finputs, 2;
 363         $inputs =~ s/ /, /g;
 364         $outputs =~ s/ /, /g;
 365         $format_conv = convert_condition ($format);
 366         print OUTPUT "#if $format_conv\n";
 367         @flags = split / /, $flags;
 368         foreach (@flags) {
 369           if (/^([^:]*):(.*)$/) {
 370             my ($flag, $cond);
 371             $flag = $1;
 372             $cond = convert_condition ($2);
 373             if (defined ($flag_cond{$flag})) {
 374               if ($flag_cond{$flag} ne "1") {
 375                 $flag_cond{$flag} .= " || $cond";
 376               }
 377             } else {
 378               $flag_cond{$flag} = $cond;
 379             }
 380           } else {
 381             $flag_cond{$_} = "1";
 382           }
 383         }
 384         $flags_conv = "";
 385         if (defined ($flag_cond{"no-test-inline"})) {
 386           $flags_conv .= or_cond_value ($flag_cond{"no-test-inline"},
 387                                         "NO_TEST_INLINE", "0");
 388         }
 389         if (defined ($flag_cond{"xfail"})) {
 390           $flags_conv .= or_cond_value ($flag_cond{"xfail"},
 391                                         "XFAIL_TEST", "0");
 392         }
 393         my (@exc_list) = qw(divbyzero inexact invalid overflow underflow);
 394         my ($exc);
 395         foreach $exc (@exc_list) {
 396           my ($exc_expected, $exc_ok, $no_exc);
 397           $exc_expected = "\U$exc\E_EXCEPTION";
 398           $exc_ok = "\U$exc\E_EXCEPTION_OK";
 399           $no_exc = "0";
 400           if ($exc eq "inexact") {
 401             $exc_ok = "0";
 402             $no_exc = "NO_INEXACT_EXCEPTION";
 403           }
 404           if (defined ($flag_cond{$exc})) {
 405             if ($flag_cond{$exc} ne "1") {
 406               die ("unexpected condition for $exc\n");
 407             }
 408             if (defined ($flag_cond{"$exc-ok"})) {
 409               $flags_conv .= or_cond_value ($flag_cond{"$exc-ok"},
 410                                             $exc_ok, $exc_expected);
 411             } else {
 412               $flags_conv .= or_value ($exc_expected);
 413             }
 414           } else {
 415             if (defined ($flag_cond{"$exc-ok"})) {
 416               $flags_conv .= or_cond_value ($flag_cond{"$exc-ok"},
 417                                             $exc_ok, $no_exc);
 418             } else {
 419               $flags_conv .= or_value ($no_exc);
 420             }
 421           }
 422         }
 423         my ($errno_expected, $errno_unknown_cond);
 424         if (defined ($flag_cond{"errno-edom"})) {
 425           if ($flag_cond{"errno-edom"} ne "1") {
 426             die ("unexpected condition for errno-edom");
 427           }
 428           if (defined ($flag_cond{"errno-erange"})) {
 429             die ("multiple errno values expected");
 430           }
 431           $errno_expected = "ERRNO_EDOM";
 432         } elsif (defined ($flag_cond{"errno-erange"})) {
 433           if ($flag_cond{"errno-erange"} ne "1") {
 434             die ("unexpected condition for errno-erange");
 435           }
 436           $errno_expected = "ERRNO_ERANGE";
 437         } else {
 438           $errno_expected = "ERRNO_UNCHANGED";
 439         }
 440         if (defined ($flag_cond{"errno-edom-ok"})) {
 441           if (defined ($flag_cond{"errno-erange-ok"})
 442               && $flag_cond{"errno-erange-ok"} ne $flag_cond{"errno-edom-ok"}) {
 443             $errno_unknown_cond = "($flag_cond{\"errno-edom-ok\"} || $flag_cond{\"errno-erange-ok\"})";
 444           } else {
 445             $errno_unknown_cond = $flag_cond{"errno-edom-ok"};
 446           }
 447         } elsif (defined ($flag_cond{"errno-erange-ok"})) {
 448           $errno_unknown_cond = $flag_cond{"errno-erange-ok"};
 449         } else {
 450           $errno_unknown_cond = "0";
 451         }
 452         $flags_conv .= or_cond_value ($errno_unknown_cond,
 453                                       "0", $errno_expected);
 454         if ($flags_conv ne "") {
 455           $flags_conv =~ s/^ \|/,/;
 456         }
 457         &parse_args (\*OUTPUT, $descr,
 458                      "$func, $inputs, $outputs$flags_conv");
 459         print OUTPUT "#endif\n";
 460       }
 461       if ($num_auto_tests == 0) {
 462         die ("no automatic tests for $func, $mode\n");
 463       }
 464       next;
 465     }
 466
 467     # TEST_...
 468     if (/^\s*TEST_/) {
 469       my ($descr, $args);
 470       chop;
 471       ($descr, $args) = ($_ =~ /TEST_(\w+)\s*\((.*)\)/);
 472       &parse_args (\*OUTPUT, $descr, $args);
 473       next;
 474     }
 475     print OUTPUT;
 476   }
 477   close INPUT;
 478   close OUTPUT;
 479 }
 480
 481
 482
 483 # Parse ulps file
 484 sub parse_ulps {
 485   my ($file) = @_;
 486   my ($test, $type, $float, $eps, $kind);
 487
 488   # $type has the following values:
 489   # "normal": No complex variable
 490   # "real": Real part of complex result
 491   # "imag": Imaginary part of complex result
 492   open ULP, $file  or die ("Can't open $file: $!");
 493   while (<ULP>) {
 494     chop;
 495     # ignore comments and empty lines
 496     next if /^#/;
 497     next if /^\s*$/;
 498     if (/^Test/) {
 499       if (/Real part of:/) {
 500         s/Real part of: //;
 501         $type = 'real';
 502       } elsif (/Imaginary part of:/) {
 503         s/Imaginary part of: //;
 504         $type = 'imag';
 505       } else {
 506         $type = 'normal';
 507       }
 508       s/^.+\"(.*)\".*$/$1/;
 509       $test = $_;
 510       $kind = 'test';
 511       next;
 512     }
 513     if (/^Function: /) {
 514       if (/Real part of/) {
 515         s/Real part of //;
 516         $type = 'real';
 517       } elsif (/Imaginary part of/) {
 518         s/Imaginary part of //;
 519         $type = 'imag';
 520       } else {
 521         $type = 'normal';
 522       }
 523       ($test) = ($_ =~ /^Function:\s*\"([a-zA-Z0-9_]+)\"/);
 524       $kind = 'fct';
 525       next;
 526     }
 527     if (/^i?(float|double|ldouble):/) {
 528       ($float, $eps) = split /\s*:\s*/,$_,2;
 529
 530       if ($eps eq "0") {
 531         # ignore
 532         next;
 533       } else {
 534         $results{$test}{$type}{'ulp'}{$float} = $eps;
 535         $results{$test}{'has_ulps'} = 1;
 536       }
 537       if ($type =~ /^real|imag$/) {
 538         $results{$test}{'type'} = 'complex';
 539       } elsif ($type eq 'normal') {
 540         $results{$test}{'type'} = 'normal';
 541       }
 542       $results{$test}{'kind'} = $kind;
 543       next;
 544     }
 545     print "Skipping unknown entry: `$_'\n";
 546   }
 547   close ULP;
 548 }
 549
 550
 551 # Clean up a floating point number
 552 sub clean_up_number {
 553   my ($number) = @_;
 554
 555   # Remove trailing zeros after the decimal point
 556   if ($number =~ /\./) {
 557     $number =~ s/0+$//;
 558     $number =~ s/\.$//;
 559   }
 560   return $number;
 561 }
 562
 563 # Output a file which can be read in as ulps file.
 564 sub print_ulps_file {
 565   my ($file) = @_;
 566   my ($test, $type, $float, $eps, $fct, $last_fct);
 567
 568   $last_fct = '';
 569   open NEWULP, ">$file" or die ("Can't open $file: $!");
 570   print NEWULP "# Begin of automatic generation\n";
 571   # first the function calls
 572   foreach $test (sort keys %results) {
 573     next if ($results{$test}{'kind'} ne 'test');
 574     foreach $type ('real', 'imag', 'normal') {
 575       if (exists $results{$test}{$type}) {
 576         if (defined $results{$test}) {
 577           ($fct) = ($test =~ /^(\w+)\s/);
 578           if ($fct ne $last_fct) {
 579             $last_fct = $fct;
 580             print NEWULP "\n# $fct\n";
 581           }
 582         }
 583         if ($type eq 'normal') {
 584           print NEWULP "Test \"$test\":\n";
 585         } elsif ($type eq 'real') {
 586           print NEWULP "Test \"Real part of: $test\":\n";
 587         } elsif ($type eq 'imag') {
 588           print NEWULP "Test \"Imaginary part of: $test\":\n";
 589         }
 590         foreach $float (@all_floats) {
 591           if (exists $results{$test}{$type}{'ulp'}{$float}) {
 592             print NEWULP "$float: ",
 593             &clean_up_number ($results{$test}{$type}{'ulp'}{$float}),
 594             "\n";
 595           }
 596         }
 597       }
 598     }
 599   }
 600   print NEWULP "\n# Maximal error of functions:\n";
 601
 602   foreach $fct (sort keys %results) {
 603     next if ($results{$fct}{'kind'} ne 'fct');
 604     foreach $type ('real', 'imag', 'normal') {
 605       if (exists $results{$fct}{$type}) {
 606         if ($type eq 'normal') {
 607           print NEWULP "Function: \"$fct\":\n";
 608         } elsif ($type eq 'real') {
 609           print NEWULP "Function: Real part of \"$fct\":\n";
 610         } elsif ($type eq 'imag') {
 611           print NEWULP "Function: Imaginary part of \"$fct\":\n";
 612         }
 613         foreach $float (@all_floats) {
 614           if (exists $results{$fct}{$type}{'ulp'}{$float}) {
 615             print NEWULP "$float: ",
 616             &clean_up_number ($results{$fct}{$type}{'ulp'}{$float}),
 617             "\n";
 618           }
 619         }
 620         print NEWULP "\n";
 621       }
 622     }
 623   }
 624   print NEWULP "# end of automatic generation\n";
 625   close NEWULP;
 626 }
 627
 628 sub get_ulps {
 629   my ($test, $type, $float) = @_;
 630
 631   return (exists $results{$test}{$type}{'ulp'}{$float}
 632           ? $results{$test}{$type}{'ulp'}{$float} : "0");
 633 }
 634
 635 # Return the ulps value for a single test.
 636 sub get_all_ulps_for_test {
 637   my ($test, $type) = @_;
 638   my ($ldouble, $double, $float, $ildouble, $idouble, $ifloat);
 639
 640   if (exists $results{$test}{'has_ulps'}) {
 641     # XXX use all_floats (change order!)
 642     $ldouble = &get_ulps ($test, $type, "ldouble");
 643     $double = &get_ulps ($test, $type, "double");
 644     $float = &get_ulps ($test, $type, "float");
 645     $ildouble = &get_ulps ($test, $type, "ildouble");
 646     $idouble = &get_ulps ($test, $type, "idouble");
 647     $ifloat = &get_ulps ($test, $type, "ifloat");
 648     return "CHOOSE ($ldouble, $double, $float, $ildouble, $idouble, $ifloat)";
 649   } else {
 650     die "get_all_ulps_for_test called for \"$test\" with no ulps\n";
 651   }
 652 }
 653
 654 # Print include file
 655 sub output_ulps {
 656   my ($file, $ulps_filename) = @_;
 657   my ($i, $fct, $type, $ulp, $ulp_real, $ulp_imag);
 658   my (%test_ulps, %func_ulps, %func_real_ulps, %func_imag_ulps);
 659
 660   open ULP, ">$file" or die ("Can't open $file: $!");
 661
 662   print ULP "/* This file is automatically generated\n";
 663   print ULP "   from $ulps_filename with gen-libm-test.pl.\n";
 664   print ULP "   Don't change it - change instead the master files.  */\n\n";
 665
 666   foreach $fct (keys %results) {
 667     $type = $results{$fct}{'type'};
 668     if ($type eq 'normal') {
 669       $ulp = get_all_ulps_for_test ($fct, 'normal');
 670     } elsif ($type eq 'complex') {
 671       $ulp_real = get_all_ulps_for_test ($fct, 'real');
 672       $ulp_imag = get_all_ulps_for_test ($fct, 'imag');
 673     } else {
 674       die "unknown results ($fct) type $type\n";
 675     }
 676     if ($results{$fct}{'kind'} eq 'fct') {
 677       if ($type eq 'normal') {
 678         $func_ulps{$fct} = $ulp;
 679       } else {
 680         $func_real_ulps{$fct} = $ulp_real;
 681         $func_imag_ulps{$fct} = $ulp_imag;
 682       }
 683     } elsif ($results{$fct}{'kind'} eq 'test') {
 684       if ($type eq 'normal') {
 685         $test_ulps{$fct} = $ulp;
 686       } else {
 687         $test_ulps{"Real part of: $fct"} = $ulp_real;
 688         $test_ulps{"Imaginary part of: $fct"} = $ulp_imag;
 689       }
 690     } else {
 691       die "unknown results ($fct) kind $results{$fct}{'kind'}\n";
 692     }
 693   }
 694   print ULP "\n/* Maximal error of functions.  */\n";
 695   print ULP "static const struct ulp_data func_ulps[] =\n  {\n";
 696   foreach $fct (sort keys %func_ulps) {
 697     print ULP "    { \"$fct\", $func_ulps{$fct} },\n";
 698   }
 699   print ULP "  };\n";
 700   print ULP "static const struct ulp_data func_real_ulps[] =\n  {\n";
 701   foreach $fct (sort keys %func_real_ulps) {
 702     print ULP "    { \"$fct\", $func_real_ulps{$fct} },\n";
 703   }
 704   print ULP "  };\n";
 705   print ULP "static const struct ulp_data func_imag_ulps[] =\n  {\n";
 706   foreach $fct (sort keys %func_imag_ulps) {
 707     print ULP "    { \"$fct\", $func_imag_ulps{$fct} },\n";
 708   }
 709   print ULP "  };\n";
 710
 711   print ULP "\n/* Error of single function calls.  */\n";
 712   print ULP "static const struct ulp_data test_ulps[] =\n  {\n";
 713   foreach $fct (sort keys %test_ulps) {
 714     print ULP "    { \"$fct\", $test_ulps{$fct} },\n";
 715   }
 716   print ULP "  };\n";
 717   close ULP;
 718 }
 719
 720 # Parse auto-libm-test-out.
 721 sub parse_auto_input {
 722   my ($file) = @_;
 723   open AUTO, $file or die ("Can't open $file: $!");
 724   while (<AUTO>) {
 725     chop;
 726     next if !/^= /;
 727     s/^= //;
 728     if (/^(\S+) (\S+) (.*)$/) {
 729       $auto_tests{$1}{$2}{$3} = 1;
 730     } else {
 731       die ("bad automatic test line: $_\n");
 732     }
 733   }
 734   close AUTO;
 735 }