Reference Information
Numerical Ranges
Normal Math Mode
- Maximum numerical range: -1E4932 < x < +1E4932.
- For trigonometric functions, maximum input range in radians is: -1E18 < x < +1E18
Graphing
- Maximum graphing numerical range: -1E100 < x or y < 1E100.
Base-N Modes
-
Floating Point Base-N Mode:
- Min: -18446744073709551615
- Max: +18446744073709551615
-
64 Bit Integer:
- Min: -9223372036854775808 (0x8000000000000000)
- Max: +9223372036854775807 (0x7FFFFFFFFFFFFFFF)
-
32 Bit Integer:
- Min: -2,147483648 (0x80000000)
- Max: +2147483647 (0x7FFFFFFF)
Error Messages
If a calculation cannot be performed, one of the following errors will be shown:
Math Error
The result could not be calculated or because it was outside the scope supported
by the operation.
Range Error
The input value, or the result, was outside the numerical range supported by the calculation.
Divide by Zero
The calculation involved a division by zero.
Syntax Error
The input could not be interpreted, or an attempt was made to perform an illegal or illogical operation.
Timeout Error
Calculation of the result took too long and was terminated. For example, an attempt to find the 15 millionth
prime number will generally give you this error.
Algebraic Order of Precedence
DreamCalc uses the following order of precedence rules:
- 1. Operation with no input (i.e. RAND)
- 2. Postfix unary functions (inc. percentage %)
- 3. Binary functions (except those listed below)
- 4. Prefix unary functions (applicable to prefix algebraic only)
- 5. Permutation functions (nPr and nCr)
- 6. ×, ÷, MOD
- 7. +, -
- 8. OR, XOR, XNOR
- 9. AND
In RPN mode, order of precedence does not apply.
Numeric Screen Layout
Numeric Screen Panel
In Normal Math Mode
- 1. Shift or Const state.
- 2. Hyperbolic State. Activated by the [HYP] key. Used with trigonometric functions.
- 3. Shown when complex numbers are enabled.
- 4. Calendar Mode. Indicates the day calendar system in use:
- AS - ANSI
- JD - Julian Days
- MJ - Modified Julian Days
- RD - Rata Die
- UX - UNIX Days since 1970
- WN - WINDOWS Days since 1899
- 5. Statistical Mode:
- SD - Statistical Data
- LN - Linear Regression
- LG - Logarithmic Regression
- EX - Exponential Regression
- PW - Power Regression
- IN - Inverse Regression
- QD - Quadratic Regression
- CB - Cubic Regression
- LX - Logistic Regression
- 6. Input Order:
- MAL - Prefix Algebraic ("Modern")
- CAL - Postfix Algebraic ("Classic")
- RPN - Reverse Polish Notation
- 7. Angle Mode:
- DEG - Degrees
- RAD - Radians
- GRA - Grads
- CYC - Cycles
- 8. Precision Mode
- NORM1 - Normal Precision (1)
- NORM2 - Normal Precision (2)
- FIX - Fixed Decimal Digit
- SCI - Fixed Digit Scientific Notation
- 9. Financial Payment Mode (Pro Edition Only)
- BEGIN - Payments at Beginning of Period
- END - Payment at End of Period
- 10. Shown when Engineering Mode is active.
- 11. Shown when Consecutive Memory holds non-zero value.
- 12. Display Value Exponent.
- 13. Additional information about the display value.
- 14. The number of values in the current statistical data list.
- 15. Number of values in the financial cashflow list (Pro Edition Only)
- 16. Information hint about recent function. Shows input parameters where applicable.
- 17. Real-time input expression. In RPN mode, shows lower 3 values of stack.
In Base-N Mode
- 3. Indicates whether leading digit zero padding is active.
- 8. Base-N Mode:
- FLOAT - Floating Point Base-N
- INT64 - 64 Bit 2s Complement Integer
- INT32 - 32 Bit 2s Complement Integer
- 9. Indicates Base-N Mode is active.
- 12. Shows Current Radix.
Constants Sources
Where applicable, constants values were derived from the following sources.
Physical Constants
Source: 2014 CODATA Recommended Values.
Spacecraft Geodesy
Source: Handbook of Chemistry & Physics 73rd Edition.
Notes. Degree and radian equivalent values are derived from arc-second source values.
Astronomical Constants
Source: Wikipedia (2005).
Notes. Solar irradiances at planetary bodies are calculated using the semi-major axis and the Earth's Solar
Constant. Rotation periods are those at the equator.
Periodic Table
Source: Standard Atomic Weights 1989. Includes new values recommended by IUPAC in 1989.
Notes. Melting/boiling points at 1 ATM. Densities given for pure metals at 25 Celsius.
See also: Getting Started