Trignometry functions error

[Buttar]

I get the wrong values of sin() function and the other trigonometry function. Secondly, please let me know how can I use inverse trigonometry function. I have added the configurations

CONFIG_NEWLIB_LIBC=y

CONFIG_NEWLIB_LIBC_FLOAT_PRINTF=y

but still it is not working. Please guide me.

[Einarh]

Hello

I assume this is the library you're using, since you set CONFIG_NEWLIB_LIBC?

Are you aware that the library uses radians and not degrees?

Also, it seems like if you want to use the full newlib variant, you'll have to specify that you're not using the nano variant (CONFIG_NEWLIB_LIBC_NANO=n).

For inverse functions it seems like you have many options, for example e_asin.c.

Best regards,

Einar