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- PROGRAM FILE 120: ACCURACY OF COS FUNCTION.
- ANSI STANDARD 7.6, 8.4
-
- SECTION 120.1: ACCURACY OF COS FUNCTION.
-
- THIS PROGRAM TESTS VALUES RETURNED BY INVOCATIONS OF THE
- COS FUNCTION FOR ACCURACY. THE INVOCATION MUST RETURN,
- ACCURATE TO SIX DIGITS, SOME VALUE ACTUALLY TAKEN ON BY
- THE FUNCTION WITHIN A DOMAIN BOUNDED BY THE ACTUAL ARGUMENT
- PLUS OR MINUS ONE IN THE SIXTH DIGIT. ALSO, AN
- 'ERROR MEASURE' IS COMPUTED AND REPORTED. THIS MEASURE
- IS JUST 2 * THE ABSOLUTE ERROR OVER THE SIZE OF THE RANGE;
- THUS, A VALUE JUST BARELY PASSING OR FAILING WILL USUALLY
- HAVE A MEASURE OF ABOUT 1. A VALUE 3 TIMES
- AS INACCURATE AS EXPECTED WILL HAVE A MEASURE OF 3.
-
- THIS TEST IS INFORMATIVE ONLY, SINCE THE ANSI STANDARD
- DOES NOT MANDATE ANY ACCURACY FOR SUPPLIED-FUNCTIONS.
-
- BEGIN TEST
-
- ARGUMENT TRUE COMPUTED ERROR OUTCOME
- VALUE VALUE MEASURE
-
- -98765.4 .999948 .999948 7.75071E-8 OK
- -98764.4 .548821 .548821 2.11951E-9 OK
- -94268.2 -4.00579E-5 -4.00579E-5 3.47476E-11 OK
- -9427.92 -1. -1. 1.03325E-5 OK
- -9425.92 .415741 .415741 3.08328E-8 OK
- -9429.49 -3.4975E-4 -3.4975E-4 5.07E-11 OK
- -986.46 1. 1. 6.29608E-4 OK
- -999 .99965 .99965 7.11159E-7 OK
- -994.314 7.48612E-5 7.48612E-5 8.81657E-11 OK
- -87.9646 1 1. 6.41981E-5 OK
- -99 3.98209E-2 3.98209E-2 6.86312E-8 OK
- -89.5354 -9.37269E-6 -9.37269E-6 1.17762E-10 OK
- -50 .964966 .964966 1.8405E-5 OK
- -20 .408082 .408082 2.03288E-6 OK
- -5.9 .927478 .927478 6.03761E-5 OK
- -4.71239 1.01962E-6 1.01962E-6 2.20857E-11 OK
- -3.14159 -1 -1. 1.40548E-5 OK
- -2.3 -.666276 -.666276 3.51649E-5 OK
- -1.5708 -3.67321E-6 -3.67321E-6 3.34657E-10 OK
- -1.2 .362358 .362358 4.85386E-5 OK
- -1 .540302 .540302 1.47908E-5 OK
- -.987654 .55065 .55065 1.40519E-4 OK
- -.765432 .721083 .721083 1.24814E-4 OK
- -9.87654E-2 .995127 .995127 5.325E-4 OK
- -7.65432E-2 .997072 .997072 4.88824E-4 OK
- -9.75319E-3 .999952 .999952 3.88033E-5 OK
- -3.45678E-3 .999994 .999994 6.83247E-4 OK
- -1.00001E-3 1. .999999 1.98968E-5 OK
- -.001 1. 1. 8.31835E-8 OK
- -9.99999E-4 1. 1. 2.08322E-6 OK
- -9.87654E-5 1. 1. 4.85932E-4 OK
- -9.17359E-6 1 1. 1.67973E-4 OK
- -9.E-10 1 1 0 OK - EXACT
- -9.E-20 1 1 0 OK - EXACT
- -9.E-30 1 1 0 OK - EXACT
- -9.E-38 1 1 0 OK - EXACT
- 0 1 1 RANGE ZERO OK - EXACT
- 1.E-38 1 1 0 OK - EXACT
- 9.E-30 1 1 0 OK - EXACT
- 9.E-20 1 1 0 OK - EXACT
- 9.E-10 1 1 0 OK - EXACT
- 9.17359E-6 1 1. 1.67973E-4 OK
- 9.87654E-5 1. 1. 4.85932E-4 OK
- 9.99999E-4 1. 1. 2.08322E-6 OK
- .001 1. 1. 8.31835E-8 OK
- 1.00001E-3 1. .999999 1.98968E-5 OK
- 3.45678E-3 .999994 .999994 6.83247E-4 OK
- 9.75319E-3 .999952 .999952 3.88033E-5 OK
- 7.65432E-2 .997072 .997072 4.88824E-4 OK
- 9.87654E-2 .995127 .995127 5.325E-4 OK
- .765432 .721083 .721083 1.24814E-4 OK
- .987654 .55065 .55065 1.40519E-4 OK
- 1 .540302 .540302 1.47908E-5 OK
- 1.2 .362358 .362358 4.85386E-5 OK
- 1.5708 -3.67321E-6 -3.67321E-6 3.34657E-10 OK
- 2.3 -.666276 -.666276 3.51649E-5 OK
- 3.14159 -1 -1. 1.40548E-5 OK
- 3.9 -.725932 -.725932 2.71266E-5 OK
- 4.71239 1.01962E-6 1.01962E-6 2.20857E-11 OK
- 5.9 .927478 .927478 6.03761E-5 OK
- 20 .408082 .408082 2.03288E-6 OK
- 50 .964966 .964966 1.8405E-5 OK
- 89.5354 -9.37269E-6 -9.37269E-6 8.22373E-11 OK
- 99 3.98209E-2 3.98209E-2 6.86312E-8 OK
- 87.9646 1 1. 6.41981E-5 OK
- 994.314 7.48612E-5 7.48612E-5 8.81657E-11 OK
- 999.1 .997297 .997297 1.5104E-6 OK
- 986.46 1. 1. 6.29608E-4 OK
- 9429.49 -3.4975E-4 -3.4975E-4 5.07E-11 OK
- 9425.92 .415741 .415741 3.08328E-8 OK
- 9427.92 -1. -1. 1.03325E-5 OK
- 94268.2 -4.00579E-5 -4.00579E-5 9.18427E-11 OK
- 98764.4 .548821 .548821 2.11951E-9 OK
- 98765.4 .999948 .999948 7.75071E-8 OK
-
- *** INFORMATIVE TEST PASSED ***
-
- END TEST
-
- END PROGRAM 120
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