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-rw-r--r--mrbgems/mruby-math/src/math.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/mrbgems/mruby-math/src/math.c b/mrbgems/mruby-math/src/math.c
index c29ba6808..39fed6cd3 100644
--- a/mrbgems/mruby-math/src/math.c
+++ b/mrbgems/mruby-math/src/math.c
@@ -23,8 +23,6 @@ domain_error(mrb_state *mrb, const char *func)
#include <float.h>
-#define MATH_TOLERANCE 1E-12
-
double
asinh(double x)
{
@@ -122,7 +120,7 @@ erf(double x)
term *= xsqr/j;
sum += term/(2*j+1);
++j;
- } while (fabs(term/sum) > MATH_TOLERANCE);
+ } while (fabs(term/sum) > DBL_EPSILON);
return two_sqrtpi*sum;
}
@@ -155,7 +153,7 @@ erfc(double x)
n += 0.5;
q1 = q2;
q2 = b/d;
- } while (fabs(q1-q2)/q2 > MATH_TOLERANCE);
+ } while (fabs(q1-q2)/q2 > DBL_EPSILON);
return one_sqrtpi*exp(-x*x)*q2;
}