diff options
| -rw-r--r-- | src/string.c | 18 | ||||
| -rw-r--r-- | tests/serd_test.c | 10 |
2 files changed, 24 insertions, 4 deletions
diff --git a/src/string.c b/src/string.c index 7229d6b2..d5899751 100644 --- a/src/string.c +++ b/src/string.c @@ -105,6 +105,19 @@ serd_strtod(const char* str, size_t* end) { double result = 0.0; +#define SET_END(index) if (end) { *end = index; } + + if (!strcmp(str, "NaN")) { + SET_END(3); + return NAN; + } else if (!strcmp(str, "-INF")) { + SET_END(4); + return -INFINITY; + } else if (!strcmp(str, "INF")) { + SET_END(3); + return INFINITY; + } + // Point s at the first non-whitespace character const char* s = str; while (is_space(*s)) { ++s; } @@ -137,10 +150,7 @@ serd_strtod(const char* str, size_t* end) result *= pow(10, expt * expt_sign); } - if (end) { - *end = s - str; - } - + SET_END(s - str); return result * sign; } diff --git a/tests/serd_test.c b/tests/serd_test.c index 61a76864..c54f379f 100644 --- a/tests/serd_test.c +++ b/tests/serd_test.c @@ -178,6 +178,16 @@ test_string_to_double(void) test_strtod(dbl, 1 / (double)MAX); } + size_t end = 0; + assert(isnan(serd_strtod("NaN", &end))); + assert(end == 3); + + assert(serd_strtod("INF", &end) == INFINITY); + assert(end == 3); + + assert(serd_strtod("-INF", &end) == -INFINITY); + assert(end == 4); + const double expt_test_nums[] = { 2.0E18, -5e19, +8e20, 2e+24, -5e-5, 8e0, 9e-0, 2e+0 }; |