Numeric Limits: Unterschied zwischen den Versionen

Aktuelle Version vom 21. Februar 2017, 20:27 Uhr

Weiterleitung nach:

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+#redirect [[ Numeric Limits/en]]
-== Integer Arithmetic ==
-Expecco supports arbitrary precision integer arithmetic,
-arbitrary precision fractions and limited precision floating point numbers.
-For integer operations, there is no overflow or error in the result for any legal operation. I.e. operations on two big numbers deliver a correct result:
- 4294967295 (0xFFFFFFFF) + 1 -> 4294967296 (0x100000000)
- 18446744073709551615 (0xFFFFFFFFFFFFFFFF) + 1 -> 18446744073709551616 (0x10000000000000000)
-when dividing integers, the "/" operator will deliver an exact result, possibly as a fraction:
-/ 3 -> 5/3
-and the truncating division "//" will deliver an integer,
-truncated towards negative infinity (i.e. the next smaller integer):
-// 3 -> 2
- -5 // 3 -> -3
-== Trigonmetric and other Math Functions ==
-Trigonometric functions when applied to integer or fractional numbers will
-first convert the number to a limited precision real number (a C-double),
-and therefore may have a limited input value range.
-For example, you will not get a valid result for:
-factorial sin
-because it is not possible to represent that large number as real number.
-(expecco will signal a domain error, as the input to sin will be +INF)