diff options
Diffstat (limited to 'src/math/cosh.c')
| -rw-r--r-- | src/math/cosh.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/src/math/cosh.c b/src/math/cosh.c index 5f38b276..a1f7dbc7 100644 --- a/src/math/cosh.c +++ b/src/math/cosh.c @@ -32,7 +32,7 @@ #include "libm.h" -static const double one = 1.0, half = 0.5, huge = 1.0e300; +static const double huge = 1.0e300; double cosh(double x) { @@ -49,21 +49,21 @@ double cosh(double x) /* |x| in [0,0.5*ln2], return 1+expm1(|x|)^2/(2*exp(|x|)) */ if (ix < 0x3fd62e43) { t = expm1(fabs(x)); - w = one+t; + w = 1.0+t; if (ix < 0x3c800000) return w; /* cosh(tiny) = 1 */ - return one + (t*t)/(w+w); + return 1.0 + (t*t)/(w+w); } /* |x| in [0.5*ln2,22], return (exp(|x|)+1/exp(|x|))/2; */ if (ix < 0x40360000) { t = exp(fabs(x)); - return half*t + half/t; + return 0.5*t + 0.5/t; } - /* |x| in [22, log(maxdouble)] return half*exp(|x|) */ + /* |x| in [22, log(maxdouble)] return 0.5*exp(|x|) */ if (ix < 0x40862E42) - return half*exp(fabs(x)); + return 0.5*exp(fabs(x)); /* |x| in [log(maxdouble), overflowthresold] */ if (ix <= 0x408633CE) |