I have just been trying out the Sin and Cos functions in the PE simulator for the 28X1.
It all makes sense in term of the values being 100 time actual, so a result of 98 equates to 0.98.
But what I have noticed is that only every second degree provides a valid result.
b1 = sin 0
b1 = sin 2
b1 = sin 3. etc
all give valid results
but if the angle is an odd value the simulator returns a value of 0.
A search of the forum past posts and reading the manual did not spot anything suggesting only every second degree was accepted.
The manual mentions a 45 step look-up table, which I took to mean
for 0 -4 5 degrees = use the table value
and for 45 - 90 deg = something like SQR(1 - SIN(90-angle))
so the question is, is this a bug or intended
and, if a bug, is it in the simulator only and is working okay in the PICAXE chips for every one degree increment of angle.
Code:
For b0 = 0 to 90
b1 = cos b0 ; replace cos with sin for other trig function
serout 7, N2400, (#b1)
NEXT b0But what I have noticed is that only every second degree provides a valid result.
b1 = sin 0
b1 = sin 2
b1 = sin 3. etc
all give valid results
but if the angle is an odd value the simulator returns a value of 0.
A search of the forum past posts and reading the manual did not spot anything suggesting only every second degree was accepted.
The manual mentions a 45 step look-up table, which I took to mean
for 0 -4 5 degrees = use the table value
and for 45 - 90 deg = something like SQR(1 - SIN(90-angle))
so the question is, is this a bug or intended
and, if a bug, is it in the simulator only and is working okay in the PICAXE chips for every one degree increment of angle.
