StrInterpOps

dfhdl.core.DFDecimal$package.DFDecimal.StrInterpOps

opaque object StrInterpOps

Attributes

Graph
Supertypes: class Object

trait Matchable

class Any
Self type: StrInterpOps.type

Members list

Type members

Classlikes

Attributes

Supertypes: class Object

trait Matchable

class Any
Self type: DecStrCtx.type

Types

Extensions

extension (sc: StringContext)

Decimal Integer String Interpolator

Syntax:

d"width'dec"

dec is a sequence of decimal characters ('0'-'9') with an optional prefix - for negative values.
Separators _ (underscore) and , (comma) within dec are ignored.
width, followed by a ', is optional and specifies the exact width of the integer's bit representation. If omitted, the width is inferred from the value's size. If specified, the output is padded with zeros or extended for signed numbers using two's complement representation to match the width.
The output type is unsigned UInt[W] for natural numbers and signed SInt[W] for negative numbers, where W is the width in bits.
If the specified width is less than the required number of bits to represent the value, an error occurs.

Attributes

Returns

A decimal type representing an unsigned (UInt) or signed (SInt) integer, encoded in two's complement.

Note

This interpolator does not accept external arguments through ${arg} and currently supports only integer values.

Example

 d"0"      // UInt[1], value = 0
 d"-1"     // SInt[2], value = -1
 d"8'-1"   // SInt[8], value = -1
 d"255"    // UInt[8], value = 255
 d"1,023"  // UInt[10], value = 1023

Signed Decimal Integer String Interpolator

Syntax:

sd"width'dec"

dec is a sequence of decimal characters ('0'-'9') with an optional prefix - for negative values.
Separators _ (underscore) and , (comma) within dec are ignored.
width, followed by a ', is optional and specifies the exact width of the integer's bit representation, which is always at least 2 bits to accommodate the sign bit.
The output is always a signed integer type SInt[W], regardless of whether the dec value is negative or natural, where W is the width in bits.
If the specified width is less than the required number of bits to represent the value including the sign bit, an error occurs.

Attributes

Returns

A decimal type representing a signed integer (SInt) value, encoded in two's complement.

Note

This interpolator does not accept external arguments through ${arg} and currently supports only integer values. It ensures that the output is always treated as a signed integer, providing an explicit way to work with signed numbers.

Example

 sd"0"     // SInt[2], value = 0 (natural number represented as a signed type)
 sd"-1"    // SInt[2], value = -1
 sd"255"   // SInt[9], value = 255 (natural number represented as a signed type)
 sd"8'255" // Error: width is too small to represent the value including the sign bit

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