diff options
Diffstat (limited to 'src/Type1/arith.c')
| -rw-r--r-- | src/Type1/arith.c | 47 |
1 files changed, 25 insertions, 22 deletions
diff --git a/src/Type1/arith.c b/src/Type1/arith.c index 65162ea..693b970 100644 --- a/src/Type1/arith.c +++ b/src/Type1/arith.c @@ -26,6 +26,8 @@ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF * THIS SOFTWARE. */ +/* $XFree86: xc/lib/font/Type1/arith.c,v 1.6 2002/02/18 20:51:57 herrb Exp $ */ + /* ARITH CWEB V0006 ******** */ /* :h1.ARITH Module - Portable Module for Multiple Precision Fixed Point Arithmetic @@ -48,9 +50,11 @@ assembly language, unlike C, will have 64-bit multiply products and The included files are: */ +#include "os.h" #include "objects.h" #include "spaces.h" #include "arith.h" + /* :h3. @@ -104,10 +108,8 @@ SIGNBITON tests the high order bit of a long 'w': The two multiplicands must be positive. */ -void DLmult(product, u, v) - register doublelong *product; - register unsigned long u; - register unsigned long v; +void +DLmult(doublelong *product, unsigned long u, unsigned long v) { #ifdef LONG64 /* printf("DLmult(? ?, %lx, %lx)\n", u, v); */ @@ -155,9 +157,9 @@ void DLmult(product, u, v) Both the dividend and the divisor must be positive. */ -void DLdiv(quotient, divisor) - doublelong *quotient; /* also where dividend is, originally */ - unsigned long divisor; +void +DLdiv(doublelong *quotient, /* also where dividend is, originally */ + unsigned long divisor) { #ifdef LONG64 /* printf("DLdiv(%lx %lx)\n", quotient, divisor); */ @@ -213,7 +215,7 @@ void DLdiv(quotient, divisor) divisor >>= 1; if ((u1u2 >> (LONGSIZE - shift)) != 0 && shift != 0) - abort("DLdiv: dividend too large"); + Abort("DLdiv: dividend too large"); u1u2 = (u1u2 << shift) + ((shift == 0) ? 0 : u3u4 >> (LONGSIZE - shift)); u3u4 <<= shift; @@ -276,7 +278,7 @@ void DLdiv(quotient, divisor) */ u1u2 = t; if (HIGHDIGIT(u1u2) != 0) - abort("divide algorithm error"); + Abort("divide algorithm error"); u1u2 = ASSEMBLE(u1u2, LOWDIGIT(u3)); u3 = LOWDIGIT(u3u4); q3q4 = ASSEMBLE(q3q4, qhat); @@ -299,9 +301,9 @@ carry. Conversely, if there was a carry, the sum of the lows must be less than the max of the lows. So, the test is "if and only if". */ -void DLadd(u, v) - doublelong *u; /* u = u + v */ - doublelong *v; +void +DLadd(doublelong *u, /* u = u + v */ + doublelong *v) { #ifdef LONG64 /* printf("DLadd(%lx %lx)\n", *u, *v); */ @@ -324,9 +326,9 @@ Testing for a borrow is even easier. If the v.low is greater than u.low, there must be a borrow. */ -void DLsub(u, v) - doublelong *u; /* u = u - v */ - doublelong *v; +void +DLsub(doublelong *u, /* u = u - v */ + doublelong *v) { #ifdef LONG64 /* printf("DLsub(%lx %lx)\n", *u, *v); */ @@ -358,8 +360,8 @@ overflow will occur when the resulting value is passed back as a fractpel. */ -fractpel FPmult(u, v) - register fractpel u,v; +fractpel +FPmult(fractpel u, fractpel v) { doublelong w; register int negative = FALSE; /* sign flag */ @@ -403,9 +405,8 @@ fractpel FPmult(u, v) These values may be signed. The function returns the quotient. */ -fractpel FPdiv(dividend, divisor) - register fractpel dividend; - register fractpel divisor; +fractpel +FPdiv(fractpel dividend, fractpel divisor) { doublelong w; /* result will be built here */ int negative = FALSE; /* flag for sign bit */ @@ -451,8 +452,10 @@ an operator that first multiplies by one constant then divides by another, keeping the intermediate result in extended precision. */ -fractpel FPstarslash(a, b, c) - register fractpel a,b,c; /* result = a * b / c */ +fractpel +FPstarslash(fractpel a, /* result = a * b / c */ + fractpel b, + fractpel c) { doublelong w; /* result will be built here */ int negative = FALSE; |