diff options
Diffstat (limited to 'source/luametatex/source/tex/texconditional.c')
| -rw-r--r-- | source/luametatex/source/tex/texconditional.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/source/luametatex/source/tex/texconditional.c b/source/luametatex/source/tex/texconditional.c index 40c704492..b2219e2ab 100644 --- a/source/luametatex/source/tex/texconditional.c +++ b/source/luametatex/source/tex/texconditional.c @@ -578,6 +578,36 @@ void tex_conditional_if(halfword code, int unless) case if_zero_int_code: result = tex_scan_int(0, NULL) == 0; goto RESULT; + case if_abs_posit_code: + case if_posit_code: + { + halfword n1 = tex_scan_posit(0); + halfword cp = tex_aux_scan_comparison(code); + halfword n2 = tex_scan_posit(0); + if (code == if_abs_posit_code) { + tex_posit zero = tex_integer_to_posit(0); + if (tex_posit_lt(n1,zero.v)) { + n1 = tex_posit_neg(n1); + } + if (tex_posit_lt(n2,zero.v)) { + n2 = tex_posit_neg(n2); + } + } + switch (cp) { + case 0: result = tex_posit_eq(n1,n2); break; + case 1: result = tex_posit_lt(n1,n2); break; + case 2: result = tex_posit_gt(n1,n2); break; + case 3: result = tex_posit_ne(n1,n2); break; + case 4: result = tex_posit_gt(n1,n2); break; + case 5: result = tex_posit_lt(n1,n2); break; + case 6: result = tex_posit_eq(tex_integer_to_posit(tex_posit_to_integer(n1) & tex_posit_to_integer(n2)).v,n1); break; + case 7: result = tex_posit_ne(tex_integer_to_posit(tex_posit_to_integer(n1) & tex_posit_to_integer(n2)).v,n1); break; + } + } + goto RESULT; + case if_zero_posit_code: + result = tex_posit_eq_zero(tex_scan_posit(0)); + goto RESULT; case if_abs_dim_code: case if_dim_code: { |