ref: dc725301592117ad0e70a0ab21926dcf5302ed31
dir: /sys/src/cmd/eqn/size.c/
#include "e.h" #include <ctype.h> void setsize(char *p) /* set size as found in p */ { nszstack++; szstack[nszstack] = 0; /* assume relative */ if (*p == '+') { ps += atoi(p+1); if (szstack[nszstack-1] != 0) /* propagate absolute size */ szstack[nszstack] = ps; } else if (*p == '-') { ps -= atoi(p+1); if (szstack[nszstack-1] != 0) szstack[nszstack] = ps; } else if (isdigit(*p)) { if (szstack[nszstack-1] == 0) printf(".nr %d \\n(.s\n", 99-nszstack); else printf(".nr %d %d\n", 99-nszstack, ps); szstack[nszstack] = ps = atoi(p); } else { ERROR "illegal size %s ignored", p WARNING; } dprintf(".\tsetsize %s; ps = %d\n", p, ps); } void size(int p1, int p2) { /* old size in p1, new in ps */ yyval = p2; dprintf(".\tS%d <- \\s%d %d \\s%d; b=%g, h=%g\n", yyval, ps, p2, p1, ebase[yyval], eht[yyval]); if (szstack[nszstack] != 0) { printf(".ds %d %s\\*(%d\\s\\n(%d\n", yyval, ABSPS(ps), p2, 99-nszstack); } else printf(".ds %d %s\\*(%d%s\n", yyval, DPS(p1,ps), p2, DPS(ps,p1)); nszstack--; ps = p1; } void globsize(void) { char temp[20]; getstr(temp, sizeof(temp)); if (temp[0] == '+') { gsize += atoi(temp+1); if (szstack[0] != 0) szstack[0] = gsize; } else if (temp[0] == '-') { gsize -= atoi(temp+1); if (szstack[0] != 0) szstack[0] = gsize; } else if (isdigit(temp[0])) { gsize = atoi(temp); szstack[0] = gsize; printf(".nr 99 \\n(.s\n"); } else { ERROR "illegal gsize %s ignored", temp WARNING; } yyval = eqnreg = 0; ps = gsize; if (gsize < 12 && !dps_set) /* sub and sup size change */ deltaps = gsize / 3; else if (gsize < 20) deltaps = gsize / 4; else deltaps = gsize / 5; }