Correction CIRCLE avec angle négatif (correct circle with negative angle)

[fmOOmf]

Permet d'utiliser cercle(rayon,angle) avec un angle negatif.
Quand angle est positif, la tortue dessine le cercle en marche avant.
Quand angle est negatif, la tortue dessine le cercle en marche arrière.

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Allow cercle(radius,angle) with negative angle value.
When angle is positive, the turtle draws the circle forwards.
When angle is negative, the turtle draws the circle backwards.

[github-actions]

	.text	.rodata	.bss	.data	Total (RAM)	Total (ROM)
Base	821588 bytes	478157 bytes	226384 bytes	1816 bytes	228200 bytes	1301561 bytes
Head	821644 bytes	478157 bytes	226384 bytes	1816 bytes	228200 bytes	1301617 bytes
	+56 bytes	+0 bytes	+0 bytes	+0 bytes	+0 bytes	+56 bytes
	+0.0 %	+0.0 %	+0.0 %	+0.0 %	+0.0 %	+0.0 %

[github-actions]

	.text	.rodata	.bss	.data	Total (RAM)	Total (ROM)
Base	821588 bytes	478157 bytes	226384 bytes	1816 bytes	228200 bytes	1301561 bytes
Head	821676 bytes	478157 bytes	226384 bytes	1816 bytes	228200 bytes	1301649 bytes
	+88 bytes	+0 bytes	+0 bytes	+0 bytes	+0 bytes	+88 bytes
	+0.0 %	+0.0 %	+0.0 %	+0.0 %	+0.0 %	+0.0 %

[Yaya-Cout]

Some little changes to do, but most of the code seems right.

[github-actions]

	.text	.rodata	.bss	.data	Total (RAM)	Total (ROM)
Base	821588 bytes	478157 bytes	226384 bytes	1816 bytes	228200 bytes	1301561 bytes
Head	821676 bytes	478157 bytes	226384 bytes	1816 bytes	228200 bytes	1301649 bytes
	+88 bytes	+0 bytes	+0 bytes	+0 bytes	+0 bytes	+88 bytes
	+0.0 %	+0.0 %	+0.0 %	+0.0 %	+0.0 %	+0.0 %

[Yaya-Cout]

One last change and it will be good !

[github-actions]

	.text	.rodata	.bss	.data	Total (RAM)	Total (ROM)
Base	821588 bytes	478157 bytes	226384 bytes	1816 bytes	228200 bytes	1301561 bytes
Head	821676 bytes	478157 bytes	226384 bytes	1816 bytes	228200 bytes	1301649 bytes
	+88 bytes	+0 bytes	+0 bytes	+0 bytes	+0 bytes	+88 bytes
	+0.0 %	+0.0 %	+0.0 %	+0.0 %	+0.0 %	+0.0 %

[fmOOmf]

Thanks for this review, for the hints and suggestions.
One more step towards perfection ☺