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111
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1 -- C46024A.ADA
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2
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3 -- Grant of Unlimited Rights
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4 --
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5 -- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
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6 -- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
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7 -- unlimited rights in the software and documentation contained herein.
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8 -- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making
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9 -- this public release, the Government intends to confer upon all
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10 -- recipients unlimited rights equal to those held by the Government.
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11 -- These rights include rights to use, duplicate, release or disclose the
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12 -- released technical data and computer software in whole or in part, in
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13 -- any manner and for any purpose whatsoever, and to have or permit others
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14 -- to do so.
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15 --
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16 -- DISCLAIMER
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17 --
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18 -- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
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19 -- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
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20 -- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
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21 -- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
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22 -- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
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23 -- PARTICULAR PURPOSE OF SAID MATERIAL.
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24 --*
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25 -- OBJECTIVE:
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26 -- CHECK FLOATING POINT CONVERSIONS WHEN THE TARGET TYPE IS A
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27 -- FIXED POINT TYPE, FOR DIGITS 5.
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28
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29 -- HISTORY:
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30 -- JET 02/19/88 CREATED ORIGINAL TEST.
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31
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32 WITH REPORT; USE REPORT;
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33
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34 PROCEDURE C46024A IS
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35
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36 TYPE FLOAT5 IS DIGITS 5;
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37 TYPE FIX1 IS DELTA 2#0.01# RANGE -16#20.0# .. 16#20.0#;
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38 TYPE FIX2 IS DELTA 2#0.0001# RANGE -16#80.0# .. 16#80.0#;
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39 TYPE FIX3 IS DELTA 2#0.000001# RANGE -16#200.0# .. 16#200.0#;
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40
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41 F5, F5A, F5B : FLOAT5;
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42
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43 GENERIC
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44 TYPE F IS DELTA <>;
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45 FUNCTION IDENTG (A : F) RETURN F;
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46
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47 FUNCTION IDENTG (A : F) RETURN F IS
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48 BEGIN
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49 RETURN A + F(IDENT_INT(0));
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50 END IDENTG;
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51
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52 FUNCTION IDENT1 IS NEW IDENTG(FIX1);
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53 FUNCTION IDENT2 IS NEW IDENTG(FIX2);
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54 FUNCTION IDENT3 IS NEW IDENTG(FIX3);
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55
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56 BEGIN
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57 TEST ("C46024A", "CHECK FLOATING POINT CONVERSIONS WHEN THE " &
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58 "TARGET TYPE IS A FIXED POINT TYPE, FOR " &
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59 "5-DIGIT PRECISION");
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60
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61 IF FIX1(FLOAT5'(2#0.1000_0000_0000_0000_00#E-1)) /=
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62 IDENT1(2#0.01#) THEN
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63 FAILED ("INCORRECT RESULT FROM CONVERSION (1)");
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64 END IF;
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65
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66 IF FIX1(FLOAT5'(-2#0.1111_1110_0000_0000_00#E5)) /=
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67 IDENT1(-2#1_1111.11#) THEN
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68 FAILED ("INCORRECT RESULT FROM CONVERSION (2)");
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69 END IF;
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70
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71 IF FIX1(FLOAT5'(-2#0.1010_0111_1111_1111_11#E4)) <
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72 IDENT1(-2#1010.10#) OR
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73 FIX1(FLOAT5'(-2#0.1010_0111_1111_1111_11#E4)) >
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74 IDENT1(-2#1010.01#) THEN
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75 FAILED ("INCORRECT RESULT FROM CONVERSION (3)");
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76 END IF;
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77
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78 IF FIX2(FLOAT5'(-2#0.1000_0000_0000_0000_00#E-3)) /=
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79 IDENT2(-2#0.0001#) THEN
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80 FAILED ("INCORRECT RESULT FROM CONVERSION (4)");
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81 END IF;
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82
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83 IF FIX2(FLOAT5'(2#0.1111_1111_1110_0000_00#E7)) /=
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84 IDENT2(2#111_1111.1111#) THEN
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85 FAILED ("INCORRECT RESULT FROM CONVERSION (5)");
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86 END IF;
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87
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88 F5 := 2#0.1010_1010_1010_1010_10#E5;
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89 IF FIX2(F5) < IDENT2(2#1_0101.0101#) OR
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90 FIX2(F5) > IDENT2(2#1_0101.0110#) THEN
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91 FAILED ("INCORRECT RESULT FROM CONVERSION (6)");
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92 END IF;
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93
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94 IF FIX3(FLOAT5'(2#0.1000_0000_0000_0000_00#E-5)) /=
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95 IDENT3(2#0.000001#) THEN
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96 FAILED ("INCORRECT RESULT FROM CONVERSION (7)");
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97 END IF;
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98
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99 IF FIX3(FLOAT5'(-2#0.1111_1111_1111_1110_00#E9)) /=
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100 IDENT3(-2#1_1111_1111.1111_11#) THEN
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101 FAILED ("INCORRECT RESULT FROM CONVERSION (8)");
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102 END IF;
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103
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104 F5 := -2#0.1010_1010_1010_1010_10#E8;
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105 IF FIX3(F5) < IDENT3(-2#1010_1010.1010_11#) OR
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106 FIX3(F5) > IDENT3(-2#1010_1010.1010_10#) THEN
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107 FAILED ("INCORRECT RESULT FROM CONVERSION (9)");
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108 END IF;
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109
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110 F5A := 2#0.1010_1010_1010_1010_10#E4;
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111 F5B := 2#0.1010_1010_1010_1010_10#E5;
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112
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113 IF FIX1(F5A) = IDENT1(2#1010.11#) AND
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114 FIX1(-F5A) = IDENT1(-2#1010.11#) AND
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115 FIX1(F5B) = IDENT1(2#1_0101.01#) AND
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116 FIX1(-F5B) = IDENT1(-2#1_0101.01#) THEN
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117 COMMENT ("CONVERSION ROUNDS TO NEAREST");
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118 ELSIF FIX1(F5A) = IDENT1(2#1010.10#) AND
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119 FIX1(-F5B) = IDENT1(-2#1_0101.10#) THEN
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120 COMMENT ("CONVERSION ROUNDS TO LEAST FIXED-POINT VALUE");
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121 ELSIF FIX1(F5B) = IDENT1(2#1_0101.10#) AND
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122 FIX1(-F5A) = IDENT1(-2#1010.10#) THEN
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123 COMMENT ("CONVERSION ROUNDS TO GREATEST FIXED-POINT VALUE");
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124 ELSIF FIX1(F5A) = IDENT1(2#1010.10#) AND
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125 FIX1(-F5A) = IDENT1(-2#1010.10#) THEN
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126 COMMENT ("CONVERSION ROUNDS TOWARD ZERO");
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127 ELSIF FIX1(F5B) = IDENT1(2#1_0101.10#) AND
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128 FIX1(-F5B) = IDENT1(-2#1_0101.10#) THEN
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129 COMMENT ("CONVERSION ROUNDS AWAY FROM ZERO");
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130 ELSE
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131 COMMENT ("UNABLE TO DETERMINE CONVERSION PATTERN");
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132 END IF;
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133
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134 RESULT;
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135
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136 END C46024A;
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