diff options
Diffstat (limited to 'src/math/log2l.c')
| -rw-r--r-- | src/math/log2l.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/src/math/log2l.c b/src/math/log2l.c index 8ebce9c4..345b395d 100644 --- a/src/math/log2l.c +++ b/src/math/log2l.c @@ -50,11 +50,6 @@ * In the tests over the interval exp(+-10000), the logarithms * of the random arguments were uniformly distributed over * [-10000, +10000]. - * - * ERROR MESSAGES: - * - * log singularity: x = 0; returns -INFINITY - * log domain: x < 0; returns NAN */ #include "libm.h" @@ -113,8 +108,7 @@ static const long double S[4] = { long double log2l(long double x) { - volatile long double z; - long double y; + long double y, z; int e; if (isnan(x)) @@ -123,8 +117,8 @@ long double log2l(long double x) return x; if (x <= 0.0) { if (x == 0.0) - return -INFINITY; - return NAN; + return -1/(x+0); /* -inf with divbyzero */ + return 0/0.0f; /* nan with invalid */ } /* separate mantissa from exponent */ |