defMathConstants

defMathConstants( 
s_id 
) 
=> s_id

Description

Associates a set of predefined math constants as properties of the given symbol.

Arguments

s_id

The properties to be associated with the symbol are listed as name/value pairs.

The names are explained in the following table.

Name	Meaning
E	The base of natural logarithm. (e)
LOG2E	The base-2 logarithm of e
LOG10E	The base-10 logarithm of e
LN2	The natural logarithm of 2.
LN10	The natural logarithm of 10.
PI	The ratio of the circumference of a circle to its diameter. ( π )
PI_OVER_2	π /2
PI_OVER_4	π /4
ONE_OVER_PI	1/π
TWO_OVER_PI	2/π
TWO_OVER_SQRTPI
SQRT_TWO	The square root of 2.
SQRT_POINT_FIVE	The square root of 1/2.
INT_MAX	The maximum value of a SKILL integer.
INT_MIN	The minimum value of a SKILL integer is -2147483648. The minimum literal value which may appear in a program is -2147483647.
DBL_MAX	The maximum value of a SKILL double.
DBL_MIN	The minimum value of a SKILL double.
SHRT_MAX	The maximum value of a SKILL "short" integer.
SHRT_MIN	The minimum value of a SKILL "short" integer.

Value Returned

s_id

The symbol ID.

Examples

defMathConstants('m) 
=> m

m.?? => ( 
SQRT_POINT_FIVE 0.7071068 
SQRT_TWO 1.414214 
TWO_OVER_SQRTPI 1.128379 
TWO_OVER_PI 0.6366198 
ONE_OVER_PI 0.3183099 
PI_OVER_4 0.7853982 
PI_OVER_2 1.570796 
PI 3.141593 
LN10 2.302585 
LN2 0.6931472 
LOG10E 0.4342945 
LOG2E 1.442695 
E 2.718282 
DBL_MIN 2.225074e-308 
DBL_MAX 1.797693e+308 
INT_MIN -2147483648 
INT_MAX 2147483647 
SHRT_MIN -32768 
SHRT_MAX 32767)

m.SQRT_POINT_FIVE 
=> 0.7071068

m.INT_MIN 
=> -2147483648

m.PI 
=> 3.141593

printf(“%0.17f\n” m.PI) 
=> 3.14159265358979312

Cadence SKILL Language Reference
Product Version IC23.1, November 2023

defMathConstants

Description

Arguments

Value Returned

Examples

Related Topics

Cadence SKILL Language ReferenceProduct Version IC23.1, November 2023

defMathConstants

Description

Arguments

Value Returned

Examples

Related Topics

Cadence SKILL Language Reference
Product Version IC23.1, November 2023