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IAR Embedded Workbench for RL78 5.20

Library Options 1

In this section:

The options on the Library Options 1 page select the printf and scanf formatters.

LibraryOptions1wMathFcts_Mym81_02.png

For information about the capabilities of the formatters, see Formatters for printf and Formatters for scanf.

Printf formatter

If you select Auto, the linker automatically chooses the appropriate formatter for printf-related functions based on information from the compiler.

To override the default formatter for all printf-related functions, except for wprintf variants, choose between:

  • Printf formatters in the IAR DLIB Library—Full, Large, Small, and Tiny

Choose a formatter that suits the requirements of your application.

Select Enable multibyte support to make the printf formatter support multibytes.

Scanf formatter

If you select Auto, the linker automatically chooses the appropriate formatter for scanf-related functions based on information from the compiler.

To override the default formatter for all scanf-related functions, except for wscanf variants, choose between:

  • Scanf formatters in the IAR DLIB Library—Full, Large, and Small

Choose a formatter that suits the requirements of your application.

Select Enable multibyte support to make the scanf formatter support multibytes.

Math functions

Some library math functions are also available in size-optimized versions, and in more accurate versions. Choose between:

Default

The default versions of the functions cos, exp, log, log10, pow, sin, tan, and __iar_Sin.

Smaller

Versions of the functions cos, exp, log, log10, pow, sin, tan, and __iar_Sin that are about 20% smaller and about 20% faster than the default versions.

More accurate

Versions of the functions cos, exp, log, log10, pow, sin, tan, and __iar_Sin that are more exact and can handle larger argument ranges than the default versions. The drawback is that they are larger and slower than the default versions.