47 lines
1.5 KiB
Plaintext
47 lines
1.5 KiB
Plaintext
#
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# For a description of the syntax of this configuration file,
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# see the file kconfig-language.txt in the NuttX tools repository.
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#
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choice
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prompt "Select math library"
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default LIBM_NONE if DEFAULT_SMALL
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default LIBM_TOOLCHAIN if !DEFAULT_SMALL
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config LIBM
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bool "Math library from NuttX"
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depends on !ARCH_MATH_H
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select ARCH_FLOAT_H
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---help---
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By default, no math library will be provided by NuttX. In this
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case, it is assumed that (1) no math library is required, or (2) you
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will be using the math.h and float.h headers file and the libm
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library provided by your toolchain.
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This is may be a very good choice is possible because your toolchain
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may have have a highly optimized version of libm.
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Another possibility is that you have a custom, architecture-specific
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math library and that the corresponding math.h file resides at
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arch/<architecture>/include/math.h. The option is selected via
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CONFIG_ARCH_MATH_H. If ARCH_MATH_H is selected,then the
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include/nuttx/libmath.h header file will be copied to include/math.h
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where it can be used by your applications.
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If ARCH_MATH_H is not defined, then this option can be selected to
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build a generic, math library built into NuttX. This math library
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comes from the Rhombus OS and was written by Nick Johnson. The
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Rhombus OS math library port was contributed by Darcy Gong.
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config LIBM_TOOLCHAIN
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bool "Math library from toolchain"
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config LIBM_NONE
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bool "No math library"
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endchoice
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if LIBM
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source "libs/libm/libm/Kconfig"
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endif
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