Showing the changes to libavutil/intfloat_readwrite.c (1 of 2 files). Show all
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| @@ -31,13 +31,13 @@ · 30 unmodified lines | |||
| 31 | 31 | ||
| 32 | double av_int2dbl(int64_t v){ | 32 | double av_int2dbl(int64_t v){ |
| 33 | if(v+v > 0xFFEULL<<52) | 33 | if(v+v > 0xFFEULL<<52) |
| 34 | return 0.0/0.0; | 34 | return NAN; |
| 35 | return ldexp(((v&((1LL<<52)-1)) + (1LL<<52)) * (v>>63|1), (v>>52&0x7FF)-1075); | 35 | return ldexp(((v&((1LL<<52)-1)) + (1LL<<52)) * (v>>63|1), (v>>52&0x7FF)-1075); |
| 36 | } | 36 | } |
| 37 | 37 | ||
| 38 | float av_int2flt(int32_t v){ | 38 | float av_int2flt(int32_t v){ |
| 39 | if(v+v > 0xFF000000U) | 39 | if(v+v > 0xFF000000U) |
| 40 | return 0.0/0.0; | 40 | return NAN; |
| 41 | return ldexp(((v&0x7FFFFF) + (1<<23)) * (v>>31|1), (v>>23&0xFF)-150); | 41 | return ldexp(((v&0x7FFFFF) + (1<<23)) * (v>>31|1), (v>>23&0xFF)-150); |
| 42 | } | 42 | } |
| 43 | 43 | ||
| @@ -49,7 +49,7 @@ double av_ext2dbl(const AVExtFloat ext){ · 5 unmodified lines | |||
| 49 | m = (m<<8) + ext.mantissa[i]; | 49 | m = (m<<8) + ext.mantissa[i]; |
| 50 | e = (((int)ext.exponent[0]&0x7f)<<8) | ext.exponent[1]; | 50 | e = (((int)ext.exponent[0]&0x7f)<<8) | ext.exponent[1]; |
| 51 | if (e == 0x7fff && m) | 51 | if (e == 0x7fff && m) |
| 52 | return 0.0/0.0; | 52 | return NAN; |
| 53 | e -= 16383 + 63; /* In IEEE 80 bits, the whole (i.e. 1.xxxx) | 53 | e -= 16383 + 63; /* In IEEE 80 bits, the whole (i.e. 1.xxxx) |
| 54 | * mantissa bit is written as opposed to the | 54 | * mantissa bit is written as opposed to the |
| 55 | * single and double precision formats. */ | 55 | * single and double precision formats. */ |
| @@ -88,7 +88,7 @@ AVExtFloat av_dbl2ext(double d){ · 32 unmodified lines | |||
| 88 | ext.mantissa[i] = m>>(56-(i<<3)); | 88 | ext.mantissa[i] = m>>(56-(i<<3)); |
| 89 | } else if (f != 0.0) { | 89 | } else if (f != 0.0) { |
| 90 | ext.exponent[0] = 0x7f; ext.exponent[1] = 0xff; | 90 | ext.exponent[0] = 0x7f; ext.exponent[1] = 0xff; |
| 91 | if (f != 1/0.0) | 91 | if (f != INFINITY) |
| 92 | ext.mantissa[0] = ~0; | 92 | ext.mantissa[0] = ~0; |
| 93 | } | 93 | } |
| 94 | if (d < 0) | 94 | if (d < 0) |