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add PTR_LEN and PTR_BITS to longbits.h

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Added PTR_LEN (length of a pointer) and PTR_BITS (bit length
of a pointer) to longbits.h.
This commit is contained in:
Landon Curt Noll
2023-08-19 12:53:31 -07:00
parent f2e4f638f6
commit f60a1d6bc5
2 changed files with 26 additions and 5 deletions
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3
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@@ -17,6 +17,9 @@ The following are the changes from calc version 2.14.3.5 to date:
Until someone can test such systems, we prefer to wait
until someone is able to test and supply a pull request.
Added PTR_LEN (length of a pointer) and PTR_BITS (bit length
of a pointer) to longbits.h.
The following are the changes from calc version 2.14.3.4 to 2.14.3.5:

28
longbits.c
View File

@@ -1,7 +1,7 @@
/*
* longbits - Determine the number if bits in a char, short, int or long
*
* Copyright (C) 1999-2007,2014,2021 Landon Curt Noll
* Copyright (C) 1999-2007,2014,2021,2023 Landon Curt Noll
*
* Calc is open software; you can redistribute it and/or modify it under
* the terms of the version 2.1 of the GNU Lesser General Public License
@@ -43,8 +43,13 @@
* This prog outputs several defines and typedefs:
*
* LONG_BITS
* Number of bits in a long. Not all (in fact very few) C
* pre-processors can do #if sizeof(long) == 8.
* Number of bits in a long.
*
* PTR_LEN
* Length of a pointer in bytes. We use void * as a generic pointer.
*
* PTR_BITS
* Length of a pointer in bits. We use void * as a generic pointer.
*
* USB8 unsigned 8 bit value
* SB8 signed 8 bit value
@@ -60,7 +65,7 @@
* and SB64 (signed 64 bit value)
* undefined ==> do not use USB64 nor SB64
*
* BOOL_B84
* BOOL_B64
* If HAVE_B64 undefined ==> FALSE
* If HAVE_B64 defined ==> TRUE
*
@@ -138,13 +143,26 @@ main(int argc, char **argv)
}
/*
* report size of long
* report size of a long
*/
printf("#undef LONG_BITS\n");
printf("#define LONG_BITS %ld\t\t/%s/\n",
(long int)long_bits, "* bit length of a long *");
putchar('\n');
/*
* report size of a pointer
*
* We use "void *" as the size of a generic pointer.
*/
printf("#undef PTR_LEN\n");
printf("#define PTR_LEN %ld\t\t/%s/\n",
(long int)sizeof(void *), "* length of a pointer *");
printf("#undef PTR_BITS\n");
printf("#define PTR_BITS %ld\t\t/%s/\n",
(long int)sizeof(void *)*CALC_CHARBIT, "* bit length of a pointer *");
putchar('\n');
/*
* If we are forcing the size of a long, then do not check
* sizes of other values but instead assume that the user