diff options
Diffstat (limited to 'binfile.c')
| -rw-r--r-- | binfile.c | 12 |
1 files changed, 11 insertions, 1 deletions
@@ -134,7 +134,8 @@ static inline I64 read_i64(FILE *fp) { static void write_f32(FILE *fp, F32 f32) { #if BINFILE_PORTABLE - /* writes as IEEE 754 32-bit floating-point number, little endian */ + /* writes as IEEE 754 32-bit floating-point number, the byte order is little endian */ + /* https://en.wikipedia.org/wiki/Single_precision_floating-point_format */ /* TODO: infinity, NaN */ U32 fraction = 0; U32 fraction_bit = ((U32)1) << 22; @@ -173,6 +174,15 @@ static void write_f32(FILE *fp, F32 f32) { #endif } +static F32 read_f32(FILE *fp) { + /* TODO: infinity, NaN */ + U32 u32 = read_u32(fp); + U32 sign = (u32 & 0x8000000); + U32 exponent = (u32 & 0x7f80000) >> 23; + U32 fraction = (u32 & 0x007ffff); + +} + static void write_f64(FILE *fp, F64 f64) { #if BINFILE_PORTABLE U64 fraction = 0; |