LOGBLK_f

Logarithm

Block Screenshot

Contents

• Logarithm +

  • Palette
  • Description
  • Dialog box
  • Default properties
  • Interfacing function
  • Computational function
  • See also

Palette

• Math operations palette

Description

This block computes the logarithm of the elements of the input vector. The user can fix the base with the parameter Basis. By default the block computes the natural logarithm. The input and output port sizes are determined by the context.

Dialog box

• Basis A real scalar greater than 1. Properties : Type ‘vec’ of size 1.

Default properties

• always active: no
• direct-feedthrough: yes
• zero-crossing: no
• mode: no
• regular inputs: - port 1 : size [-1,1] / type 1
• regular outputs: - port 1 : size [-1,1] / type 1
• number/sizes of activation inputs: 0
• number/sizes of activation outputs: 0
• continuous-time state: no
• discrete-time state: no
• object discrete-time state: no
• name of computational function: logblk

Interfacing function

• SCI/modules/scicos_blocks/macros/NonLinear/LOGBLK_f.sci

Computational function

• SCI/modules/scicos_blocks/src/fortran/logblk.f (Type 0)

See also

• POWBLK_f - Array power (Bloc Xcos)
• EXPBLK_m - Exponential of a scalar (Bloc Xcos)
• SQRT - Square root (Bloc Xcos)