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Change lambdify's default for backend to llvm when available #431

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Merged
merged 3 commits into from
Mar 20, 2023
Merged

Change lambdify's default for backend to llvm when available #431

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4cfa839
Change lambdify's default for backend to llvm when available
bjodah Feb 12, 2023
7cccac0
Update symengine/lib/symengine_wrapper.pyx
bjodah Feb 14, 2023
721312e
avoid using Cython compile-time 'IF'
bjodah Feb 14, 2023
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8 changes: 6 additions & 2 deletions symengine/lib/symengine_wrapper.pyx
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Original file line number Diff line number Diff line change
Expand Up @@ -5203,7 +5203,7 @@ def Lambdify(args, *exprs, cppbool real=True, backend=None, order='C',
Whether datatype is ``double`` (``double complex`` otherwise).
backend : str
'llvm' or 'lambda'. When ``None`` the environment variable
'SYMENGINE_LAMBDIFY_BACKEND' is used (taken as 'lambda' if unset).
'SYMENGINE_LAMBDIFY_BACKEND' is used (taken as 'llvm' if available, otherwise 'lambda').
order : 'C' or 'F'
C- or Fortran-contiguous memory layout. Note that this affects
broadcasting: e.g. a (m, n) matrix taking 3 arguments and given a
Expand Down Expand Up @@ -5235,7 +5235,11 @@ def Lambdify(args, *exprs, cppbool real=True, backend=None, order='C',

"""
if backend is None:
backend = os.getenv('SYMENGINE_LAMBDIFY_BACKEND', "lambda")
IF HAVE_SYMENGINE_LLVM:
backend_default = 'llvm' if real else 'lambda'
ELSE:
backend_default = 'lambda'
backend = os.getenv('SYMENGINE_LAMBDIFY_BACKEND', backend_default)
if backend == "llvm":
IF HAVE_SYMENGINE_LLVM:
if dtype == None:
Expand Down