class CConfig:
_compilation_info_ = ExternalCompilationInfo(includes=['float.h'])
DBL_MAX = rffi_platform.DefinedConstantDouble('DBL_MAX')
DBL_MIN = rffi_platform.DefinedConstantDouble('DBL_MIN')
DBL_MANT_DIG = rffi_platform.ConstantInteger('DBL_MANT_DIG')
from rpython.rtyper.tool import rffi_platform
from rpython.translator.tool.cbuild import ExternalCompilationInfo
from rpython.rlib.objectmodel import not_rpython
class CConfig:
_compilation_info_ = ExternalCompilationInfo(includes=["float.h"])
float_constants = ["DBL_MAX", "DBL_MIN", "DBL_EPSILON"]
int_constants = [
"DBL_MAX_EXP", "DBL_MAX_10_EXP", "DBL_MIN_EXP", "DBL_MIN_10_EXP",
"DBL_DIG", "DBL_MANT_DIG", "FLT_RADIX", "FLT_ROUNDS"
]
for const in float_constants:
setattr(CConfig, const, rffi_platform.DefinedConstantDouble(const))
for const in int_constants:
setattr(CConfig, const, rffi_platform.DefinedConstantInteger(const))
del float_constants, int_constants, const
globals().update(rffi_platform.configure(CConfig))
INVALID_MSG = "could not convert string to float"
def string_to_float(s):
"""
Conversion of string to float.
This version tries to only raise on invalid literals.
Overflows should be converted to infinity whenever possible.