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| author | Mattias Andrée <maandree@kth.se> | 2016-03-13 23:54:56 +0100 |
|---|---|---|
| committer | Mattias Andrée <maandree@kth.se> | 2016-03-13 23:54:56 +0100 |
| commit | 5b10b24044b3350a19ab3d3c0b37b5e9c12365b1 (patch) | |
| tree | 3f6aa8de29becc5d7511fcca50e6d31982c1b64b /src/zerror.c | |
| parent | Optimisations (diff) | |
| download | libzahl-5b10b24044b3350a19ab3d3c0b37b5e9c12365b1.tar.gz libzahl-5b10b24044b3350a19ab3d3c0b37b5e9c12365b1.tar.bz2 libzahl-5b10b24044b3350a19ab3d3c0b37b5e9c12365b1.tar.xz | |
Multiple changes:
1) Compile test with -O0, it takes too long otherwise.
2) Add error codes: ZERROR_0_POW_0, ZERROR_0_DIV_0, ZERROR_DIV_0, ZERROR_NEGATIVE.
3) Add workaround for a bug in clang (src/allocator.c).
4) Cleanups.
5) Minor optimisations.
6) Add inclusion guard for zahl.h.
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to 'src/zerror.c')
| -rw-r--r-- | src/zerror.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/src/zerror.c b/src/zerror.c index c59b092..e4ed427 100644 --- a/src/zerror.c +++ b/src/zerror.c @@ -2,6 +2,13 @@ #include "internals.h" +#define LIST_ERRORS\ + X(ZERROR_0_POW_0, "indeterminate form: 0:th power of 0")\ + X(ZERROR_0_DIV_0, "indeterminate form: 0 divided by 0")\ + X(ZERROR_DIV_0, "undefined result: division by 0")\ + X(ZERROR_NEGATIVE, "argument must be non-negative") + + enum zerror zerror(const char **desc) { @@ -10,10 +17,16 @@ zerror(const char **desc) *desc = strerror(libzahl_error); errno = libzahl_error; return ZERROR_ERRNO_SET; - } else { - /* Current, we should not be able to get here. */ - if (desc) + } + + if (desc) { + switch (-libzahl_error) { +#define X(V, D) case V: *desc = D; break; + LIST_ERRORS +#undef X + default: abort(); - return -libzahl_error; + } } + return -libzahl_error; } |