I have this: H is a real-valued Matrix
z=abs(H[i,j]/H[j,j])
if z!=infinity:
print H[i,j], H[i,j].parent()
print H[j,j], H[j,j].parent()
print z
But it doesn't work:
H[ 2 , 1 ]= -0.0243252127705267 Real Field with 53 bits of
precision
H[ 1 , 1 ]= 0.000 Real Field with
2008/9/4 agi [EMAIL PROTECTED]:
I have this: H is a real-valued Matrix
z=abs(H[i,j]/H[j,j])
if z!=infinity:
print H[i,j], H[i,j].parent()
print H[j,j], H[j,j].parent()
print z
But it doesn't work:
H[ 2 , 1 ]= -0.0243252127705267 Real Field with 53 bits of
precision
H[ 1 ,
On 04/09/2008, at 8:22 PM, agi wrote:
Hi,
I want to check if a number is set to infinity or NaN. So I tried this
if-statement:
if x!=infinity:
print x
But this doesn't work when x=a/b with a very small b, so that x
becomes infinity.
(I'm using SAGE Version 3.0.1)
If x = 1.0/0 and
2008/9/4 David Philp [EMAIL PROTECTED]:
On 04/09/2008, at 8:22 PM, agi wrote:
Hi,
I want to check if a number is set to infinity or NaN. So I tried this
if-statement:
if x!=infinity:
print x
But this doesn't work when x=a/b with a very small b, so that x
becomes infinity.
(I'm
On Sep 4, 7:23 am, John Cremona [EMAIL PROTECTED] wrote:
2008/9/4 David Philp [EMAIL PROTECTED]:
I think this is better:
http://sagemath.org/doc/ref/module-sage.rings.real-mpfr.html
since RDF (double precision reals) is deprecated. Again, look for
is_infinity.
John Cremona
RDF is
2008/9/4 Jason Merrill [EMAIL PROTECTED]:
On Sep 4, 7:23 am, John Cremona [EMAIL PROTECTED] wrote:
2008/9/4 David Philp [EMAIL PROTECTED]:
I think this is better:
http://sagemath.org/doc/ref/module-sage.rings.real-mpfr.html
since RDF (double precision reals) is deprecated. Again, look
It works with not z.is_infinity().
Thanks :)
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