diff options
Diffstat (limited to 'src/cmd/eqn/over.c')
| -rw-r--r-- | src/cmd/eqn/over.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/cmd/eqn/over.c b/src/cmd/eqn/over.c new file mode 100644 index 00000000..2794a739 --- /dev/null +++ b/src/cmd/eqn/over.c @@ -0,0 +1,35 @@ +#include "e.h" + +void boverb(int p1, int p2) +{ + int treg; + double h, b, d, d1, d2; + extern double Overgap, Overwid, Overline; + + treg = salloc(); + yyval = p1; + d = EM(Overgap, ps); + h = eht[p1] + eht[p2] + d; + b = eht[p2] - d; + dprintf(".\tS%d <- %d over %d; b=%g, h=%g\n", + yyval, p1, p2, b, h); + nrwid(p1, ps, p1); + nrwid(p2, ps, p2); + printf(".nr %d \\n(%d\n", treg, p1); + printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p2, treg, treg, p2); + printf(".nr %d \\n(%d+%gm\n", treg, treg, Overwid); + d2 = eht[p2]-ebase[p2]-d; /* denom */ + printf(".ds %d \\v'%gm'\\h'\\n(%du-\\n(%du/2u'\\*(%d\\v'%gm'\\\n", + yyval, REL(d2,ps), treg, p2, p2, REL(-d2,ps)); + d1 = 2 * d + ebase[p1]; /* num */ + printf("\\h'-\\n(%du-\\n(%du/2u'\\v'%gm'\\*(%d\\v'%gm'\\\n", + p2, p1, REL(-d1,ps), p1, REL(d1,ps)); + printf("\\h'-\\n(%du-\\n(%du/2u+%gm'\\v'%gm'\\l'\\n(%du-%gm'\\h'%gm'\\v'%gm'\n", + treg, p1, Overline, REL(-d,ps), + treg, 2*Overline, Overline, REL(d,ps)); + ebase[yyval] = b; + eht[yyval] = h; + lfont[yyval] = rfont[yyval] = 0; + sfree(p2); + sfree(treg); +} |