scfx_utils.hh (12853:e23d6f09069a) scfx_utils.hh (13197:aeba6988033f)
1/*****************************************************************************
2
3 Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
4 more contributor license agreements. See the NOTICE file distributed
5 with this work for additional information regarding copyright ownership.
6 Accellera licenses this file to you under the Apache License, Version 2.0
7 (the "License"); you may not use this file except in compliance with the
8 License. You may obtain a copy of the License at

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62// ----------------------------------------------------------------------------
63
64#define MSB_STATEMENT(n) if (x >> n) { x >>= n; i += n; }
65
66inline int
67scfx_find_msb(unsigned long x)
68{
69 int i = 0;
1/*****************************************************************************
2
3 Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
4 more contributor license agreements. See the NOTICE file distributed
5 with this work for additional information regarding copyright ownership.
6 Accellera licenses this file to you under the Apache License, Version 2.0
7 (the "License"); you may not use this file except in compliance with the
8 License. You may obtain a copy of the License at

--- 53 unchanged lines hidden (view full) ---

62// ----------------------------------------------------------------------------
63
64#define MSB_STATEMENT(n) if (x >> n) { x >>= n; i += n; }
65
66inline int
67scfx_find_msb(unsigned long x)
68{
69 int i = 0;
70# if defined(SC_LONG_64)
70# if SC_LONG_64
71 MSB_STATEMENT(32);
71 MSB_STATEMENT(32);
72# endif // defined(SC_LONG_64)
72# endif // SC_LONG_64
73 MSB_STATEMENT(16);
74 MSB_STATEMENT(8);
75 MSB_STATEMENT(4);
76 MSB_STATEMENT(2);
77 MSB_STATEMENT(1);
78 return i;
79}
80
81#undef MSB_STATEMENT
82
83#define LSB_STATEMENT(n) if (x << n) { x <<= n; i -= n; }
84
85inline int
86scfx_find_lsb(unsigned long x)
87{
88 int i;
73 MSB_STATEMENT(16);
74 MSB_STATEMENT(8);
75 MSB_STATEMENT(4);
76 MSB_STATEMENT(2);
77 MSB_STATEMENT(1);
78 return i;
79}
80
81#undef MSB_STATEMENT
82
83#define LSB_STATEMENT(n) if (x << n) { x <<= n; i -= n; }
84
85inline int
86scfx_find_lsb(unsigned long x)
87{
88 int i;
89# if defined(SC_LONG_64)
89# if SC_LONG_64
90 i = 63;
91 LSB_STATEMENT(32);
92# else
93 i = 31;
90 i = 63;
91 LSB_STATEMENT(32);
92# else
93 i = 31;
94# endif // defined(SC_LONG_64)
94# endif // SC_LONG_64
95 LSB_STATEMENT(16);
96 LSB_STATEMENT(8);
97 LSB_STATEMENT(4);
98 LSB_STATEMENT(2);
99 LSB_STATEMENT(1);
100 return i;
101}
102

--- 391 unchanged lines hidden --- 		95 LSB_STATEMENT(16);
96 LSB_STATEMENT(8);
97 LSB_STATEMENT(4);
98 LSB_STATEMENT(2);
99 LSB_STATEMENT(1);
100 return i;
101}
102

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