| 42 | } |
| 43 | |
| 44 | double av_ext2dbl(const AVExtFloat ext){ |
| 45 | uint64_t m = 0; |
| 46 | int e, i; |
| 47 | |
| 48 | for (i = 0; i < 8; i++) |
| 49 | m = (m<<8) + ext.mantissa[i]; |
| 50 | e = (((int)ext.exponent[0]&0x7f)<<8) | ext.exponent[1]; |
| 51 | if (e == 0x7fff && m) |
| 52 | return 0.0/0.0; |
| 53 | e -= 16383 + 63; /* In IEEE 80 bits, the whole (i.e. 1.xxxx) |
| 54 | * mantissa bit is written as opposed to the |
| 55 | * single and double precision formats. */ |
| 56 | if (ext.exponent[0]&0x80) |
| 57 | m= -m; |
| 58 | return ldexp(m, e); |
| 59 | } |
| 60 | |
| 61 | int64_t av_dbl2int(double d){ |
| 62 | int e; |