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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/scalbn.c | |
| parent | f20eeea657d62f2ef905627ca3a9094d33af7d40 (diff) | |
outline details from C18 annex F
Diffstat (limited to 'src/math/scalbn.c')
| -rw-r--r-- | src/math/scalbn.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/src/math/scalbn.c b/src/math/scalbn.c index bf5b4aae..f01843ce 100644 --- a/src/math/scalbn.c +++ b/src/math/scalbn.c @@ -4,7 +4,17 @@ TYPE TGFN(scalbn)(TYPE x, int n) { - return x - n; + switch (fpclassify(x)) { + case FP_ZERO: return x; + case FP_INFINITE: return x; + default: break; + } + + if (n == 0) { + return x; + } + + return TGFN(ldexp)(x, n); } /* |