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bsd_source/lib/libc/src_bsd/math/e_acoshf.c - 1.4KB - 45 lines

34:             } else 
35:                 return logf(x)+ln2;   /* acosh(huge)=log(2x) */
36:         } else if (hx==0x3f800000) {
39:             t=x*x;
40:             return logf((float)2.0*x-one/(x+sqrtf(t-one)));
41:         } else {                       /* 1<x<2 */