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bsd_source/lib/libc/src_bsd/math/s_asinh.c - 1.9KB - 67 lines

51:             t = fabs(x);
52:             w = log(2.0*t+one/(sqrt(x*x+one)+t));
53:         } else {               /* 2.0 > |x| > 2**-28 */
54:             t = x*x;
55:             w =log1p(fabs(x)+t/(one+sqrt(one+t)));
56:         }