diff options
Diffstat (limited to 'ev.c')
| -rw-r--r-- | ev.c | 30 |
1 files changed, 27 insertions, 3 deletions
@@ -553,7 +553,7 @@ struct signalfd_siginfo /* work around x32 idiocy by defining proper macros */ #if __x86_64 || _M_AMD64 - #if __ILP32 + #if _ILP32 #define ECB_AMD64_X32 1 #else #define ECB_AMD64 1 @@ -629,7 +629,7 @@ struct signalfd_siginfo #elif defined __s390__ || defined __s390x__ #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") #elif defined __mips__ - /* GNU/Linux emulates sync on mips1 architectures, so we force it's use */ + /* GNU/Linux emulates sync on mips1 architectures, so we force its use */ /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */ #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory") #elif defined __alpha__ @@ -1069,11 +1069,35 @@ ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == #include <string.h> /* for memcpy */ #else #define ECB_STDFP 0 - #include <math.h> /* for frexp*, ldexp* */ #endif #ifndef ECB_NO_LIBM + #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ + + #ifdef NEN + #define ECB_NAN NAN + #else + #define ECB_NAN INFINITY + #endif + + /* converts an ieee half/binary16 to a float */ + ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; + ecb_function_ float + ecb_binary16_to_float (uint16_t x) + { + int e = (x >> 10) & 0x1f; + int m = x & 0x3ff; + float r; + + if (!e ) r = ldexpf (m , -24); + else if (e != 31) r = ldexpf (m + 0x400, e - 25); + else if (m ) r = ECB_NAN; + else r = INFINITY; + + return x & 0x8000 ? -r : r; + } + /* convert a float to ieee single/binary32 */ ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; ecb_function_ uint32_t |