3bb41d3910
This seems to fix an error when flt_arith converts a literal double-precision float to IEEE format. For example, 0.5 and 0.75 got converted to slightly below their correct values. My host gcc for amd64 has 64-bit long, but flt_arith needs only 32 bits. The code (at least flt_add.c) can make 32-bit overflows. Such overflows would set the higher bits of a 64-bit long, which might cause problems later. I need to use uint32_t and not int32_t because the code still uses long, and the sign extension from int32_t to long would cause problems. The mantissa represents a value in [0, 2) that can't be negative, so unsigned type is better. Also, signed overflow is undefined behavior in C, so flt_add.c better make overflows with uint32_t and not int32_t. This commit doesn't touch lang/cem/libcc.ansi/stdlib/ext_fmt.h which continues to use unsigned long for its mantissa fields. |
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| .. | ||
| alloc | ||
| assert | ||
| em_code | ||
| em_data | ||
| em_mes | ||
| em_opt | ||
| flt_arith | ||
| idf | ||
| input | ||
| malloc | ||
| object | ||
| read_em | ||
| string | ||
| system | ||
| Xmalloc | ||
| Action | ||
| Action.lint | ||