diff options
Diffstat (limited to 'soft-fp')
| -rw-r--r-- | soft-fp/op-common.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/soft-fp/op-common.h b/soft-fp/op-common.h index 4526afd1b6..d6f32aef33 100644 --- a/soft-fp/op-common.h +++ b/soft-fp/op-common.h @@ -2041,6 +2041,27 @@ } \ while (0) +/* Truncate from a wider floating-point format to a narrower one. + Input and output are cooked. */ +#define FP_TRUNC_COOKED(dfs, sfs, dwc, swc, D, S) \ + do \ + { \ + _FP_STATIC_ASSERT (_FP_FRACBITS_##sfs >= _FP_FRACBITS_##dfs, \ + "destination mantissa wider than source"); \ + if (S##_c == FP_CLS_NAN) \ + _FP_FRAC_SRL_##swc (S, (_FP_WFRACBITS_##sfs \ + - _FP_WFRACBITS_##dfs)); \ + else \ + _FP_FRAC_SRS_##swc (S, (_FP_WFRACBITS_##sfs \ + - _FP_WFRACBITS_##dfs), \ + _FP_WFRACBITS_##sfs); \ + _FP_FRAC_COPY_##dwc##_##swc (D, S); \ + D##_e = S##_e; \ + D##_c = S##_c; \ + D##_s = S##_s; \ + } \ + while (0) + /* Helper primitives. */ /* Count leading zeros in a word. */ |