Author: Alex Gaynor <alex.gay...@gmail.com>
Branch:
Changeset: r58991:f4c2e0223550
Date: 2012-11-18 20:50 -0600
http://bitbucket.org/pypy/pypy/changeset/f4c2e0223550/
Log: merged upstream
diff --git a/pypy/rpython/extfuncregistry.py b/pypy/rpython/extfuncregistry.py
--- a/pypy/rpython/extfuncregistry.py
+++ b/pypy/rpython/extfuncregistry.py
@@ -42,6 +42,7 @@
('sqrt', [float], float),
('log', [float], float),
('log10', [float], float),
+ ('log1p', [float], float),
('sin', [float], float),
('cos', [float], float),
('atan2', [float, float], float),
diff --git a/pypy/rpython/lltypesystem/module/ll_math.py
b/pypy/rpython/lltypesystem/module/ll_math.py
--- a/pypy/rpython/lltypesystem/module/ll_math.py
+++ b/pypy/rpython/lltypesystem/module/ll_math.py
@@ -58,6 +58,7 @@
math_fabs = llexternal('fabs', [rffi.DOUBLE], rffi.DOUBLE)
math_log = llexternal('log', [rffi.DOUBLE], rffi.DOUBLE)
math_log10 = llexternal('log10', [rffi.DOUBLE], rffi.DOUBLE)
+math_log1p = llexternal('log1p', [rffi.DOUBLE], rffi.DOUBLE)
math_copysign = llexternal(underscore + 'copysign',
[rffi.DOUBLE, rffi.DOUBLE], rffi.DOUBLE,
elidable_function=True)
@@ -363,6 +364,13 @@
raise ValueError("math domain error")
return math_log10(x)
+def ll_math_log1p(x):
+ if x == 0.0:
+ return x # returns 0.0 or -0.0
+ if x <= -1.0:
+ raise ValueError("math domain error")
+ return math_log1p(x)
+
def ll_math_sin(x):
if isinf(x):
raise ValueError("math domain error")
@@ -413,13 +421,13 @@
'acos', 'asin', 'atan',
'ceil', 'cosh', 'exp', 'fabs',
'sinh', 'tan', 'tanh',
- 'acosh', 'asinh', 'atanh', 'log1p', 'expm1',
+ 'acosh', 'asinh', 'atanh', 'expm1',
]
unary_math_functions_can_overflow = [
- 'cosh', 'exp', 'log1p', 'sinh', 'expm1',
+ 'cosh', 'exp', 'sinh', 'expm1',
]
unary_math_functions_c99 = [
- 'acosh', 'asinh', 'atanh', 'log1p', 'expm1',
+ 'acosh', 'asinh', 'atanh', 'expm1',
]
for name in unary_math_functions:
diff --git a/pypy/rpython/lltypesystem/module/test/test_llinterp_math.py
b/pypy/rpython/lltypesystem/module/test/test_llinterp_math.py
--- a/pypy/rpython/lltypesystem/module/test/test_llinterp_math.py
+++ b/pypy/rpython/lltypesystem/module/test/test_llinterp_math.py
@@ -37,7 +37,7 @@
assert self.interpret(f, [0.3, 0.4]) == f(0.3, 0.4)
return next_test
- for name in ll_math.unary_math_functions + ['log', 'log10', 'sin', 'cos',
'sqrt']:
+ for name in ll_math.unary_math_functions + ['log', 'log10', 'log1p',
'sin', 'cos', 'sqrt']:
func_name = 'test_%s' % (name,)
next_test = new_unary_test(name)
next_test.func_name = func_name
@@ -82,3 +82,11 @@
return -42.0
assert self.interpret(f, [10.0, 40000]) == -42.0
+
+ def test_log1p_zero(self):
+ def f(x):
+ x = rfloat.copysign(0.0, x)
+ return rfloat.copysign(1.0, rfloat.log1p(x))
+
+ assert self.interpret(f, [3.0]) == 1.0
+ assert self.interpret(f, [-2.0]) == -1.0
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