# Revision history [back]

### parametric_plot3d fails with floating-point parameter

u,v = var('u,v') X = u * cos(v) - (1/3)* u^3 * cos(v3) Y = - u * sin(v) - (1/3) *u^3 * sin(3v) Z = u^2 cos(2v) p = parametric_plot3d([X,Y,Z], (u,0,1),(v,0,2*pi),frame=False, color="blue")

works but with 0.9 in place of 1 in range of u produces an error. Namely,

Unhandled SIGILL: An illegal instruction occurred in Sage. This probably occurred because a compiled component of Sage has a bug in it and is not properly wrapped with sig_on(), sig_off(). Sage will now terminate.

 2 No.2 Revision kcrisman 12052 ●37 ●125 ●245

### parametric_plot3d fails with floating-point parameter

u,v = var('u,v')
X =   u * cos(v) - (1/3)* u^3 * cos(v3)
cos(v*3)
Y =   - u * sin(v) - (1/3) *u^3 * sin(3v)
sin(3*v)
Z =   u^2 cos(2v)
*cos(2*v)
p = parametric_plot3d([X,Y,Z], (u,0,1),(v,0,2*pi),frame=False, color="blue")color="blue")


works but with 0.9 in place of 1 in range of u produces an error. Namely,

Unhandled SIGILL: An illegal instruction occurred in Sage. This probably occurred because a compiled component of Sage has a bug in it and is not properly wrapped with sig_on(), sig_off(). Sage will now terminate.

 3 No.3 Revision slelievre 13611 ●12 ●132 ●269 http://carva.org/samue...

### parametric_plot3d fails with floating-point parameter

The following code

u,v = var('u,v')
X =   u * cos(v) - (1/3)* u^3 * cos(v*3)
Y =   - u * sin(v) - (1/3) *u^3 * sin(3*v)
Z =   u^2 *cos(2*v)
p = parametric_plot3d([X,Y,Z], (u,0,1),(v,0,2*pi),frame=False, color="blue")


works but with 0.9 in place of 1 in range of u produces an error. Namely,

Unhandled SIGILL: An illegal instruction occurred in Sage.
This probably occurred because a compiled *compiled* component of Sage has a bug
in it and is not properly wrapped with sig_on(), sig_off().
Sage will now terminate.terminate.