diff options
Diffstat (limited to 'libavutil/float2half.h')
| -rw-r--r-- | libavutil/float2half.h | 36 |
1 files changed, 2 insertions, 34 deletions
diff --git a/libavutil/float2half.h b/libavutil/float2half.h index 3548aa1d45..20fdc2a36b 100644 --- a/libavutil/float2half.h +++ b/libavutil/float2half.h @@ -26,41 +26,9 @@ typedef struct Float2HalfTables { uint8_t shifttable[512]; } Float2HalfTables; -static void init_float2half_tables(Float2HalfTables *t) -{ - for (int i = 0; i < 256; i++) { - int e = i - 127; - - if (e < -24) { // Very small numbers map to zero - t->basetable[i|0x000] = 0x0000; - t->basetable[i|0x100] = 0x8000; - t->shifttable[i|0x000] = 24; - t->shifttable[i|0x100] = 24; - } else if (e < -14) { // Small numbers map to denorms - t->basetable[i|0x000] = (0x0400>>(-e-14)); - t->basetable[i|0x100] = (0x0400>>(-e-14)) | 0x8000; - t->shifttable[i|0x000] = -e-1; - t->shifttable[i|0x100] = -e-1; - } else if (e <= 15) { // Normal numbers just lose precision - t->basetable[i|0x000] = ((e + 15) << 10); - t->basetable[i|0x100] = ((e + 15) << 10) | 0x8000; - t->shifttable[i|0x000] = 13; - t->shifttable[i|0x100] = 13; - } else if (e < 128) { // Large numbers map to Infinity - t->basetable[i|0x000] = 0x7C00; - t->basetable[i|0x100] = 0xFC00; - t->shifttable[i|0x000] = 24; - t->shifttable[i|0x100] = 24; - } else { // Infinity and NaN's stay Infinity and NaN's - t->basetable[i|0x000] = 0x7C00; - t->basetable[i|0x100] = 0xFC00; - t->shifttable[i|0x000] = 13; - t->shifttable[i|0x100] = 13; - } - } -} +void ff_init_float2half_tables(Float2HalfTables *t); -static uint16_t float2half(uint32_t f, const Float2HalfTables *t) +static inline uint16_t float2half(uint32_t f, const Float2HalfTables *t) { uint16_t h; |