libm-test-round.inc 13 KB

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  1. /* Test round.
  2. Copyright (C) 1997-2019 Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  4. The GNU C Library is free software; you can redistribute it and/or
  5. modify it under the terms of the GNU Lesser General Public
  6. License as published by the Free Software Foundation; either
  7. version 2.1 of the License, or (at your option) any later version.
  8. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Lesser General Public License for more details.
  12. You should have received a copy of the GNU Lesser General Public
  13. License along with the GNU C Library; if not, see
  14. <http://www.gnu.org/licenses/>. */
  15. #include "libm-test-driver.c"
  16. static const struct test_f_f_data round_test_data[] =
  17. {
  18. TEST_f_f (round, 0, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  19. TEST_f_f (round, minus_zero, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  20. TEST_f_f (round, plus_infty, plus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  21. TEST_f_f (round, minus_infty, minus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  22. TEST_f_f (round, qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  23. TEST_f_f (round, -qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  24. TEST_f_f (round, snan_value, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
  25. TEST_f_f (round, -snan_value, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
  26. TEST_f_f (round, min_subnorm_value, 0.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  27. TEST_f_f (round, min_value, 0.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  28. TEST_f_f (round, 1, 1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  29. TEST_f_f (round, 2, 2, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  30. TEST_f_f (round, 0x1p23, 0x1p23, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  31. TEST_f_f (round, 0x1p24, 0x1p24, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  32. TEST_f_f (round, 0x1p25, 0x1p25, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  33. TEST_f_f (round, 0x1p52, 0x1p52, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  34. TEST_f_f (round, 0x1p53, 0x1p53, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  35. TEST_f_f (round, 0x1p54, 0x1p54, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  36. TEST_f_f (round, 0x1p63, 0x1p63, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  37. TEST_f_f (round, 0x1p64, 0x1p64, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  38. TEST_f_f (round, 0x1p65, 0x1p65, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  39. TEST_f_f (round, 0x1p105, 0x1p105, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  40. TEST_f_f (round, 0x1p106, 0x1p106, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  41. TEST_f_f (round, 0x1p107, 0x1p107, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  42. TEST_f_f (round, 0x1p112, 0x1p112, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  43. TEST_f_f (round, 0x1p113, 0x1p113, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  44. TEST_f_f (round, 0x1p114, 0x1p114, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  45. TEST_f_f (round, max_value, max_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  46. TEST_f_f (round, -min_subnorm_value, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  47. TEST_f_f (round, -min_value, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  48. TEST_f_f (round, -1, -1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  49. TEST_f_f (round, -2, -2, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  50. TEST_f_f (round, -0x1p23, -0x1p23, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  51. TEST_f_f (round, -0x1p24, -0x1p24, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  52. TEST_f_f (round, -0x1p25, -0x1p25, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  53. TEST_f_f (round, -0x1p52, -0x1p52, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  54. TEST_f_f (round, -0x1p53, -0x1p53, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  55. TEST_f_f (round, -0x1p54, -0x1p54, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  56. TEST_f_f (round, -0x1p63, -0x1p63, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  57. TEST_f_f (round, -0x1p64, -0x1p64, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  58. TEST_f_f (round, -0x1p65, -0x1p65, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  59. TEST_f_f (round, -0x1p105, -0x1p105, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  60. TEST_f_f (round, -0x1p106, -0x1p106, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  61. TEST_f_f (round, -0x1p107, -0x1p107, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  62. TEST_f_f (round, -0x1p112, -0x1p112, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  63. TEST_f_f (round, -0x1p113, -0x1p113, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  64. TEST_f_f (round, -0x1p114, -0x1p114, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  65. TEST_f_f (round, -max_value, -max_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  66. TEST_f_f (round, 0.2L, 0.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  67. TEST_f_f (round, -0.2L, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  68. TEST_f_f (round, 0.5, 1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  69. TEST_f_f (round, -0.5, -1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  70. TEST_f_f (round, 0.8L, 1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  71. TEST_f_f (round, -0.8L, -1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  72. TEST_f_f (round, 1.5, 2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  73. TEST_f_f (round, -1.5, -2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  74. TEST_f_f (round, 0.1, 0.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  75. TEST_f_f (round, 0.25, 0.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  76. TEST_f_f (round, 0.625, 1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  77. TEST_f_f (round, -0.1, -0.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  78. TEST_f_f (round, -0.25, -0.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  79. TEST_f_f (round, -0.625, -1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  80. TEST_f_f (round, 2097152.5, 2097153, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  81. TEST_f_f (round, -2097152.5, -2097153, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  82. #if !TEST_COND_binary32
  83. TEST_f_f (round, 0xffffffffffff.0p0L, 0xffffffffffff.0p0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  84. TEST_f_f (round, 0xffffffffffff.4p0L, 0xffffffffffff.0p0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  85. TEST_f_f (round, 0xffffffffffff.8p0L, 0x1000000000000.0p0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  86. TEST_f_f (round, 0xffffffffffff.cp0L, 0x1000000000000.0p0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  87. TEST_f_f (round, -0xffffffffffff.0p0L, -0xffffffffffff.0p0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  88. TEST_f_f (round, -0xffffffffffff.4p0L, -0xffffffffffff.0p0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  89. TEST_f_f (round, -0xffffffffffff.8p0L, -0x1000000000000.0p0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  90. TEST_f_f (round, -0xffffffffffff.cp0L, -0x1000000000000.0p0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  91. #endif
  92. #if MANT_DIG >= 64
  93. /* The result can only be represented in long double. */
  94. TEST_f_f (round, 4503599627370495.5L, 4503599627370496.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  95. TEST_f_f (round, 4503599627370496.25L, 4503599627370496.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  96. TEST_f_f (round, 4503599627370496.5L, 4503599627370497.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  97. TEST_f_f (round, 4503599627370496.75L, 4503599627370497.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  98. TEST_f_f (round, 4503599627370497.5L, 4503599627370498.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  99. # if MANT_DIG > 100
  100. TEST_f_f (round, 4503599627370494.5000000000001L, 4503599627370495.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  101. TEST_f_f (round, 4503599627370495.5000000000001L, 4503599627370496.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  102. TEST_f_f (round, 4503599627370496.5000000000001L, 4503599627370497.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  103. # endif
  104. TEST_f_f (round, -4503599627370495.5L, -4503599627370496.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  105. TEST_f_f (round, -4503599627370496.25L, -4503599627370496.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  106. TEST_f_f (round, -4503599627370496.5L, -4503599627370497.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  107. TEST_f_f (round, -4503599627370496.75L, -4503599627370497.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  108. TEST_f_f (round, -4503599627370497.5L, -4503599627370498.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  109. # if MANT_DIG > 100
  110. TEST_f_f (round, -4503599627370494.5000000000001L, -4503599627370495.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  111. TEST_f_f (round, -4503599627370495.5000000000001L, -4503599627370496.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  112. TEST_f_f (round, -4503599627370496.5000000000001L, -4503599627370497.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  113. # endif
  114. TEST_f_f (round, 9007199254740991.5L, 9007199254740992.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  115. TEST_f_f (round, 9007199254740992.25L, 9007199254740992.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  116. TEST_f_f (round, 9007199254740992.5L, 9007199254740993.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  117. TEST_f_f (round, 9007199254740992.75L, 9007199254740993.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  118. TEST_f_f (round, 9007199254740993.5L, 9007199254740994.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  119. TEST_f_f (round, -9007199254740991.5L, -9007199254740992.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  120. TEST_f_f (round, -9007199254740992.25L, -9007199254740992.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  121. TEST_f_f (round, -9007199254740992.5L, -9007199254740993.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  122. TEST_f_f (round, -9007199254740992.75L, -9007199254740993.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  123. TEST_f_f (round, -9007199254740993.5L, -9007199254740994.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  124. # if MANT_DIG > 100
  125. TEST_f_f (round, 9007199254740991.0000000000001L, 9007199254740991.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  126. TEST_f_f (round, 9007199254740992.0000000000001L, 9007199254740992.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  127. TEST_f_f (round, 9007199254740993.0000000000001L, 9007199254740993.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  128. TEST_f_f (round, 9007199254740991.5000000000001L, 9007199254740992.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  129. TEST_f_f (round, 9007199254740992.5000000000001L, 9007199254740993.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  130. TEST_f_f (round, 9007199254740993.5000000000001L, 9007199254740994.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  131. TEST_f_f (round, -9007199254740991.0000000000001L, -9007199254740991.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  132. TEST_f_f (round, -9007199254740992.0000000000001L, -9007199254740992.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  133. TEST_f_f (round, -9007199254740993.0000000000001L, -9007199254740993.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  134. TEST_f_f (round, -9007199254740991.5000000000001L, -9007199254740992.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  135. TEST_f_f (round, -9007199254740992.5000000000001L, -9007199254740993.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  136. TEST_f_f (round, -9007199254740993.5000000000001L, -9007199254740994.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  137. # endif
  138. TEST_f_f (round, 72057594037927935.5L, 72057594037927936.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  139. TEST_f_f (round, 72057594037927936.25L, 72057594037927936.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  140. TEST_f_f (round, 72057594037927936.5L, 72057594037927937.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  141. TEST_f_f (round, 72057594037927936.75L, 72057594037927937.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  142. TEST_f_f (round, 72057594037927937.5L, 72057594037927938.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  143. TEST_f_f (round, -72057594037927935.5L, -72057594037927936.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  144. TEST_f_f (round, -72057594037927936.25L, -72057594037927936.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  145. TEST_f_f (round, -72057594037927936.5L, -72057594037927937.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  146. TEST_f_f (round, -72057594037927936.75L, -72057594037927937.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  147. TEST_f_f (round, -72057594037927937.5L, -72057594037927938.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  148. /* Check cases where first double is a exact integer higher than 2^52 and
  149. the precision is determined by second long double for IBM long double. */
  150. TEST_f_f (round, 34503599627370498.515625L, 34503599627370499.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  151. TEST_f_f (round, -34503599627370498.515625L, -34503599627370499.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  152. # if MANT_DIG >= 106
  153. TEST_f_f (round, 1192568192774434123539907640624.484375L, 1192568192774434123539907640624.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  154. TEST_f_f (round, -1192568192774434123539907640624.484375L, -1192568192774434123539907640624.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  155. # endif
  156. TEST_f_f (round, 10141204801825835211973625643007.5L, 10141204801825835211973625643008.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  157. TEST_f_f (round, 10141204801825835211973625643008.25L, 10141204801825835211973625643008.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  158. TEST_f_f (round, 10141204801825835211973625643008.5L, 10141204801825835211973625643009.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  159. TEST_f_f (round, 10141204801825835211973625643008.75L, 10141204801825835211973625643009.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  160. TEST_f_f (round, 10141204801825835211973625643009.5L, 10141204801825835211973625643010.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
  161. #endif
  162. };
  163. static void
  164. round_test (void)
  165. {
  166. ALL_RM_TEST (round, 1, round_test_data, RUN_TEST_LOOP_f_f, END);
  167. }
  168. static void
  169. do_test (void)
  170. {
  171. round_test ();
  172. }
  173. /*
  174. * Local Variables:
  175. * mode:c
  176. * End:
  177. */