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Add some less-than-perfect macros to provide some implementation of strtof() and strtold()

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Alan Carvalho de Assis 2016-10-19 14:26:48 -06:00 committed by Gregory Nutt
parent 97b3240737
commit 1cb05d007d
1 changed files with 13 additions and 0 deletions
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13
include/stdlib.h
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@ -80,6 +80,19 @@
# define environ get_environ_ptr()
#endif
/* The functions strtof() and strtold() are not currently implemented in
* NuttX. Ideally, custom implementations of these functions to be provided:
*
* strtof() - Some MCUs, such as the Cortex-M4F, have built in 32-bit FPU.
* A true implementation could exploit the improved performance by the
* the FPU.
* strtold() - Of course, there is a lost of 32-bits of accuracy in this
* conversion.
*/
#define strtof(a,b) (float)strtod(a,b)
#define strtold(a,b) (long double)strtod(a,b)
/****************************************************************************
* Public Type Definitions
****************************************************************************/