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Use INFINITY and NAN macros instead of 1/0 and 0/0

This commit is contained in:
Mans Rullgard 2010-10-18 21:42:26 +01:00
parent f318ee3e37
commit 324e7ee260
2 changed files with 5 additions and 5 deletions
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2
cmdutils.c
View File

@ -198,7 +198,7 @@ unknown_opt:
} else if (po->flags & OPT_INT64) { } else if (po->flags & OPT_INT64) {
*po->u.int64_arg = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX); *po->u.int64_arg = parse_number_or_die(opt, arg, OPT_INT64, INT64_MIN, INT64_MAX);
} else if (po->flags & OPT_FLOAT) { } else if (po->flags & OPT_FLOAT) {
*po->u.float_arg = parse_number_or_die(opt, arg, OPT_FLOAT, -1.0/0.0, 1.0/0.0); *po->u.float_arg = parse_number_or_die(opt, arg, OPT_FLOAT, -INFINITY, INFINITY);
} else if (po->flags & OPT_FUNC2) { } else if (po->flags & OPT_FUNC2) {
if (po->u.func2_arg(opt, arg) < 0) { if (po->u.func2_arg(opt, arg) < 0) {
fprintf(stderr, "%s: failed to set value '%s' for option '%s'\n", argv[0], arg, opt); fprintf(stderr, "%s: failed to set value '%s' for option '%s'\n", argv[0], arg, opt);

8
libavutil/intfloat_readwrite.c
View File

@ -31,13 +31,13 @@
double av_int2dbl(int64_t v){ double av_int2dbl(int64_t v){
if(v+v > 0xFFEULL<<52) if(v+v > 0xFFEULL<<52)
return 0.0/0.0; return NAN;
return ldexp(((v&((1LL<<52)-1)) + (1LL<<52)) * (v>>63|1), (v>>52&0x7FF)-1075); return ldexp(((v&((1LL<<52)-1)) + (1LL<<52)) * (v>>63|1), (v>>52&0x7FF)-1075);
} }
float av_int2flt(int32_t v){ float av_int2flt(int32_t v){
if(v+v > 0xFF000000U) if(v+v > 0xFF000000U)
return 0.0/0.0; return NAN;
return ldexp(((v&0x7FFFFF) + (1<<23)) * (v>>31|1), (v>>23&0xFF)-150); return ldexp(((v&0x7FFFFF) + (1<<23)) * (v>>31|1), (v>>23&0xFF)-150);
} }
@ -49,7 +49,7 @@ double av_ext2dbl(const AVExtFloat ext){
m = (m<<8) + ext.mantissa[i]; m = (m<<8) + ext.mantissa[i];
e = (((int)ext.exponent[0]&0x7f)<<8) | ext.exponent[1]; e = (((int)ext.exponent[0]&0x7f)<<8) | ext.exponent[1];
if (e == 0x7fff && m) if (e == 0x7fff && m)
return 0.0/0.0; return NAN;
e -= 16383 + 63; /* In IEEE 80 bits, the whole (i.e. 1.xxxx) e -= 16383 + 63; /* In IEEE 80 bits, the whole (i.e. 1.xxxx)
* mantissa bit is written as opposed to the * mantissa bit is written as opposed to the
* single and double precision formats. */ * single and double precision formats. */
@ -88,7 +88,7 @@ AVExtFloat av_dbl2ext(double d){
ext.mantissa[i] = m>>(56-(i<<3)); ext.mantissa[i] = m>>(56-(i<<3));
} else if (f != 0.0) { } else if (f != 0.0) {
ext.exponent[0] = 0x7f; ext.exponent[1] = 0xff; ext.exponent[0] = 0x7f; ext.exponent[1] = 0xff;
if (f != 1/0.0) if (f != INFINITY)
ext.mantissa[0] = ~0; ext.mantissa[0] = ~0;
} }
if (d < 0) if (d < 0)