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      1 # Python bindings for Yasm: Pyrex input file for floatnum.h
      2 #
      3 #  Copyright (C) 2006  Michael Urman, Peter Johnson
      4 #
      5 # Redistribution and use in source and binary forms, with or without
      6 # modification, are permitted provided that the following conditions
      7 # are met:
      8 # 1. Redistributions of source code must retain the above copyright
      9 #    notice, this list of conditions and the following disclaimer.
     10 # 2. Redistributions in binary form must reproduce the above copyright
     11 #    notice, this list of conditions and the following disclaimer in the
     12 #    documentation and/or other materials provided with the distribution.
     13 #
     14 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER CONTRIBUTORS ``AS IS''
     15 # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     16 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     17 # ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR OTHER CONTRIBUTORS BE
     18 # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     19 # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     20 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     21 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     22 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     23 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     24 # POSSIBILITY OF SUCH DAMAGE.
     25 
     26 cdef class FloatNum:
     27     cdef yasm_floatnum *flt
     28     def __cinit__(self, value):
     29         self.flt = NULL
     30         if isinstance(value, FloatNum):
     31             self.flt = yasm_floatnum_copy((<FloatNum>value).flt)
     32             return
     33         if PyCObject_Check(value):  # should check Desc
     34             self.flt = <yasm_floatnum *>PyCObject_AsVoidPtr(value)
     35             return
     36 
     37         if isinstance(value, float): string = str(float)
     38         else: string = value
     39         self.flt = yasm_floatnum_create(string)
     40 
     41     def __dealloc__(self):
     42         if self.flt != NULL: yasm_floatnum_destroy(self.flt)
     43 
     44     def __neg__(self):
     45         result = FloatNum(self)
     46         yasm_floatnum_calc((<FloatNum>result).flt, YASM_EXPR_NEG, NULL)
     47         return result
     48     def __pos__(self): return self
     49 
     50