diff options
Diffstat (limited to 'src/math/asin.c')
| -rw-r--r-- | src/math/asin.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/src/math/asin.c b/src/math/asin.c index 3e8f99ed..c926b188 100644 --- a/src/math/asin.c +++ b/src/math/asin.c @@ -82,11 +82,9 @@ double asin(double x) } /* |x| < 0.5 */ if (ix < 0x3fe00000) { - if (ix < 0x3e500000) { - /* |x|<0x1p-26, return x with inexact if x!=0*/ - FORCE_EVAL(x + 0x1p120f); + /* if 0x1p-1022 <= |x| < 0x1p-26, avoid raising underflow */ + if (ix < 0x3e500000 && ix >= 0x00100000) return x; - } return x + x*R(x*x); } /* 1 > |x| >= 0.5 */ |