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| author | Jakob Kaivo <jkk@ung.org> | 2019-03-03 21:25:50 -0500 |
|---|---|---|
| committer | Jakob Kaivo <jkk@ung.org> | 2019-03-03 21:25:50 -0500 |
| commit | 06696f40afe58a231e2531c8bf6d9f0dadb92e51 (patch) | |
| tree | b146422c6326ffe3debf3163f0941d8dda0be105 /src/math/asin.c | |
| parent | f20eeea657d62f2ef905627ca3a9094d33af7d40 (diff) | |
outline details from C18 annex F
Diffstat (limited to 'src/math/asin.c')
| -rw-r--r-- | src/math/asin.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/math/asin.c b/src/math/asin.c index 92dae8c8..a94338f5 100644 --- a/src/math/asin.c +++ b/src/math/asin.c @@ -6,11 +6,15 @@ /** arc sine **/ TYPE TGFN(asin)(TYPE x) { - if (x < -1.0 || x > 1.0) { + if (TGFN(fabs)(x) > 1.0) { errno = EDOM; /* ARGUMENT(x) is not in the range [-1, +1] */ return TGHUGE; } + if (fpclassify(x) == FP_ZERO) { + return x; + } + if (0) { errno = ERANGE; /* The result cannot be represented */ /* RETURN_FAILURE(CONSTANT(HUGE_VAL), A range error occurred); */ |