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* bignum->string now uses bytevectors as intermediate rep.

This commit is contained in:
Abdulaziz Ghuloum 2007-05-18 22:08:45 -04:00
parent 691a42fe4e
commit 862871a787
4 changed files with 11 additions and 10 deletions
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bin/ikarus
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14
bin/ikarus-numerics.c
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@ -1222,12 +1222,8 @@ ikrt_bnfxdivrem(ikp x, ikp y, ikpcb* pcb){
}
ikp
ikrt_bntostring(ikp x, ikpcb* pcb){
ikrt_bignum_to_bytevector(ikp x, ikpcb* pcb){
/* FIXME: avoid calling malloc, instead, use the heap pointer itself
* as a buffer to hold the temporary data after ensuring that it has enough
* space */
@ -1258,9 +1254,9 @@ ikrt_bntostring(ikp x, ikpcb* pcb){
string_start++;
bytes--;
}
ikp str = ik_alloc(pcb, align(bytes + disp_string_data + (sign_bit?1:0)));
ref(str, 0) = fix(bytes + (sign_bit?1:0));
ikp dest = str + disp_string_data;
ikp bv = ik_alloc(pcb, align(bytes + disp_bytevector_data + (sign_bit?1:0)));
ref(bv, 0) = fix(bytes + (sign_bit?1:0));
ikp dest = bv + disp_bytevector_data;
if(sign_bit){
*dest = '-';
dest++;
@ -1274,6 +1270,6 @@ ikrt_bntostring(ikp x, ikpcb* pcb){
dest[bytes] = 0;
}
free(mem);
return str + string_tag;
return bv + bytevector_tag;
}

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src/ikarus.boot
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7
src/ikarus.numerics.ss
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@ -376,11 +376,16 @@
[(bignum? x) (even-bignum? x)]
[else (error 'odd? "~s is not an integer" x)])))
(define bignum->string
(lambda (x)
(utf8-bytevector->string
(foreign-call "ikrt_bignum_to_bytevector" x))))
(define number->string
(lambda (x)
(cond
[(fixnum? x) (fixnum->string x)]
[(bignum? x) (foreign-call "ikrt_bntostring" x)]
[(bignum? x) (bignum->string x)]
[(flonum? x) (flonum->string x)]
[else (error 'number->string "~s is not a number" x)])))