details: http://hg.sympy.org/sympy/rev/82b2b88d0332
changeset: 1785:82b2b88d0332
user: Hubert Tsang <[EMAIL PROTECTED]>
date: Thu Oct 09 00:08:31 2008 +0200
description:
Fixes polynomial order in LaTeX printing (#1126).
diffs (61 lines):
diff -r 1b3bc62700cf -r 82b2b88d0332 sympy/printing/latex.py
--- a/sympy/printing/latex.py Wed Oct 08 23:59:02 2008 +0200
+++ b/sympy/printing/latex.py Thu Oct 09 00:08:31 2008 +0200
@@ -28,9 +28,12 @@
return expr
def _print_Add(self, expr):
- tex = str(self._print(expr.args[0]))
+ args = list(expr.args)
+ args.sort(Basic._compare_pretty)
- for term in expr.args[1:]:
+ tex = str(self._print(args[0]))
+
+ for term in args[1:]:
coeff = term.as_coeff_terms()[0]
if coeff.is_negative:
diff -r 1b3bc62700cf -r 82b2b88d0332 sympy/printing/tests/test_latex.py
--- a/sympy/printing/tests/test_latex.py Wed Oct 08 23:59:02 2008 +0200
+++ b/sympy/printing/tests/test_latex.py Thu Oct 09 00:08:31 2008 +0200
@@ -10,14 +10,15 @@
k,n = symbols('kn', integer=True)
def test_latex_basic():
- assert latex(1+x) in ["$1 + x$", '$x + 1$']
+ assert latex(1+x) == "$1 + x$"
assert latex(x**2) == "${x}^{2}$"
- assert latex(x**(1+x)) in ["${x}^{1 + x}$", '${x}^{x + 1}$']
+ assert latex(x**(1+x)) == "${x}^{1 + x}$"
+ assert latex(x**3+x+1+x**2) == "$1 + x + {x}^{2} + {x}^{3}$"
def test_latex_symbols():
Gamma, lmbda, rho = map(Symbol, ('Gamma', 'lambda', 'rho'))
mass, volume = map(Symbol, ('mass', 'volume'))
- assert latex(Gamma + lmbda) in [r"$\Gamma + \lambda$", '$\lambda +
\Gamma$']
+ assert latex(Gamma + lmbda) == r"$\Gamma + \lambda$"
assert latex(Gamma * lmbda) == r"$\Gamma \lambda$"
assert latex(Symbol('q21')) == r"$q_{21}$"
assert latex(Symbol('epsilon0')) == r"$\epsilon_{0}$"
@@ -31,7 +32,7 @@
def test_latex_functions():
assert latex(exp(x)) == "${e}^{x}$"
- assert latex(exp(1)+exp(2)) in ["${e}^{2} + e$", '$e + {e}^{2}$']
+ assert latex(exp(1)+exp(2)) == "$e + {e}^{2}$"
f = Function('f')
assert latex(f(x)) == '$\\operatorname{f}\\left(x\\right)$'
@@ -56,9 +57,8 @@
def test_latex_derivatives():
assert latex(diff(x**3, x, evaluate=False)) == \
r"$\frac{\partial}{\partial x} {x}^{3}$"
- assert latex(diff(sin(x)+x**2, x, evaluate=False)) in [
- r"$\frac{\partial}{\partial x}\left({x}^{2} +
\operatorname{sin}\left(x\right)\right)$",
- r'$\frac{\partial}{\partial x}\left(\operatorname{sin}\left(x\right) +
{x}^{2}\right)$']
+ assert latex(diff(sin(x)+x**2, x, evaluate=False)) == \
+ r"$\frac{\partial}{\partial x}\left(\operatorname{sin}\left(x\right) +
{x}^{2}\right)$"
def test_latex_integrals():
assert latex(Integral(log(x), x)) == r"$\int
\operatorname{log}\left(x\right)\,dx$"
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