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Convert fsbtoblk() from a macro to a function. The redundant

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instances of 64-bit arithmetic were costing 775 bytes, and the
inlining offered no benefit.  Moreover, ambiguity as to the argument
types led to the introduction of a bug (see rev 1.56).

Also, remove some casts that are now clearly redundant.

Inspired by:	67467
This commit is contained in:
David Schultz 2004-06-04 09:30:51 +00:00
parent e451f9b758
commit 841fe8e83f
1 changed files with 13 additions and 8 deletions
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21
bin/df/df.c
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@ -81,6 +81,7 @@ static int int64width(int64_t);
static char *makenetvfslist(void);
static void prthuman(const struct statfs *, int64_t);
static void prthumanval(int64_t);
static intmax_t fsbtoblk(int64_t, uint64_t, u_long);
static void prtstat(struct statfs *, struct maxwidths *);
static size_t regetmntinfo(struct statfs **, long, const char **);
static void update_maxwidths(struct maxwidths *, const struct statfs *);
@ -345,10 +346,15 @@ prthumanval(int64_t bytes)
* Convert statfs returned file system size into BLOCKSIZE units.
* Attempts to avoid overflow for large file systems.
*/
#define fsbtoblk(num, fsbs, bs) \
(((fsbs) != 0 && (fsbs) < (bs)) ? \
(num) / (intmax_t)((bs) / (fsbs)) : \
(num) * (intmax_t)((fsbs) / (bs)))
static intmax_t
fsbtoblk(int64_t num, uint64_t fsbs, u_long bs)
{
if (fsbs != 0 && fsbs < bs)
return (num / (intmax_t)(bs / fsbs));
else
return (num * (intmax_t)(fsbs / bs));
}
/*
* Print out status about a file system.
@ -392,11 +398,10 @@ prtstat(struct statfs *sfsp, struct maxwidths *mwp)
prthuman(sfsp, used);
} else {
(void)printf(" %*jd %*jd %*jd",
mwp->total, (intmax_t)fsbtoblk(sfsp->f_blocks,
mwp->total, fsbtoblk(sfsp->f_blocks,
sfsp->f_bsize, blocksize),
mwp->used, (intmax_t)fsbtoblk(used, sfsp->f_bsize,
blocksize),
mwp->avail, (intmax_t)fsbtoblk(sfsp->f_bavail,
mwp->used, fsbtoblk(used, sfsp->f_bsize, blocksize),
mwp->avail, fsbtoblk(sfsp->f_bavail,
sfsp->f_bsize, blocksize));
}
(void)printf(" %5.0f%%",