strtoul() and strtoull() now count how many digits were converted.
If that number is zero, then the conversion is considered to have
failed: 0 is returned, errno is set to ERANGE and the 'ptr' parameter
reference is initialized with a pointer to the string to be converted.
This has two consequences:
1) A floating point number that has no digits in the significand
is no longer converted to zero. For example ".e10" can no longer
result in a successful conversion.
2) You can detect if a conversion is successful by comparing pointers
after the conversion function has returned:
char * str;
char * ptr;
long n;
n = strtol(str,&ptr,10);
if(n == 0 && str == ptr)
printf("conversion has failed");
git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@15030 87f5fb63-7c3d-0410-a384-fd976d0f7a62
- nan() and nanf() now return quiet NaNs.
- Added internal __inf() and __inff() functions.
- strtof() now calls nanf() and __inff(), respectively, to produce
the special floating point values for nan/inf/infinity.
- strtod() now calls nan() and __inf(), respectively, to produce
the special floating point values for nan/inf/infinity.
- The scanf() family now calls nan() and __inf(), respectively, to
produce the special floating point values for nan/inf/infinity.
git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14948 87f5fb63-7c3d-0410-a384-fd976d0f7a62
number rather than a decimal one. Now how odd is that?
- strtod() and strtof() now support "inf"/"infinity"/"nan"/"nan(..)" and
hexadecimal floating point numbers, for C99.
- Added the fpclassify(), isfinite(), isnormal() and signbit() macros for C99.
- Reimplemented isnan() and isinf() as macros for C99. The corresponding
functions will be dropped from the library. Note that the isinf() macro
does not return -1, 0 or 1 like the old function did, but only 0 or 1
depending upon whether the parameter represents +/- infinity or not.
- Added fabsf() for C99.
git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14935 87f5fb63-7c3d-0410-a384-fd976d0f7a62
