eldo_user

Eldo Netlist Setup
Functions, Operators and Expressions
Functions, Operators and Expressions
This topic is divided into:
Arithmetic Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Expressions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Arithmetic Functions
A set of arithmetic functions may be used in Eldo for the calculation of device parameters,
model parameters, new waves, and so on. These are divided into two groups:
• Functions for use without restriction in any “runtime” expression, see Table 4-2.
• Functions for use only in .EXTRACT, .DEFWAVE or .SETSOA, see Table 4-3.
Table 4-2. Arithmetic Functions and Operators
Function
Returns
ABS(val)
Absolute value of val: |val|
ACOS(val)
Arc cosine of val
ACOSH(val)
Arc hyperbolic cosine of val
ASIN(val)
Arc sine of val
ASINH(val)
Arc hyperbolic sine of val
ATAN(val)
Arc tangent of val
ATANH(val)
Arc hyperbolic tangent of val
BITOF(a, b) Returns “1” if bit b of the integer value of parameter a is a “1”.
Returns “0” if bit b of the integer value of parameter a is a
“0”.Returns “0” if bit b ≥ 32.
CEIL(val)
COS(val)
COSH(val)
DB(val)
Ceiling rounding function, returns the smallest integer value not
less than val. This is known as rounding up. For example ceil(1.25)
returns 2.0 and ceil(-1.25) returns -1.0.
Cosine of val, where val is defined in radians
Hyperbolic cosine of val
value in dBs of val (20×log 10 (val))
DDT(val)
DERIV(val)
EXP(val)
Returns the derivative of val
Returns the derivative of val
Exponent of val
Eldo® User's Manual, 15.3 109