diff options
Diffstat (limited to 'src/math/acosh.c')
| -rw-r--r-- | src/math/acosh.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/src/math/acosh.c b/src/math/acosh.c index a7c87e3c..15f51c6e 100644 --- a/src/math/acosh.c +++ b/src/math/acosh.c @@ -27,7 +27,6 @@ #include "libm.h" static const double -one = 1.0, ln2 = 6.93147180559945286227e-01; /* 0x3FE62E42, 0xFEFA39EF */ double acosh(double x) @@ -47,9 +46,9 @@ double acosh(double x) return 0.0; /* acosh(1) = 0 */ } else if (hx > 0x40000000) { /* 2**28 > x > 2 */ t = x*x; - return log(2.0*x - one/(x+sqrt(t-one))); + return log(2.0*x - 1.0/(x+sqrt(t-1.0))); } else { /* 1 < x < 2 */ - t = x-one; + t = x-1.0; return log1p(t + sqrt(2.0*t+t*t)); } } |