diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/pi_bigdecimal.js | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/examples/pi_bigdecimal.js b/examples/pi_bigdecimal.js index 7d5eccf..6a416b7 100644 --- a/examples/pi_bigdecimal.js +++ b/examples/pi_bigdecimal.js @@ -6,10 +6,10 @@ /* compute PI with a precision of 'prec' digits */ function calc_pi(prec) { - const CHUD_A = 13591409d; - const CHUD_B = 545140134d; - const CHUD_C = 640320d; - const CHUD_C3 = 10939058860032000d; /* C^3/24 */ + const CHUD_A = 13591409m; + const CHUD_B = 545140134m; + const CHUD_C = 640320m; + const CHUD_C3 = 10939058860032000m; /* C^3/24 */ const CHUD_DIGITS_PER_TERM = 14.18164746272548; /* log10(C/12)*3 */ /* return [P, Q, G] */ @@ -17,7 +17,7 @@ function calc_pi(prec) { var c, P, Q, G, P1, Q1, G1, P2, Q2, G2, b1; if (a == (b - 1n)) { b1 = BigDecimal(b); - G = (2d * b1 - 1d) * (6d * b1 - 1d) * (6d * b1 - 5d); + G = (2m * b1 - 1m) * (6m * b1 - 1m) * (6m * b1 - 5m); P = G * (CHUD_B * b1 + CHUD_A); if (b & 1n) P = -P; @@ -32,7 +32,7 @@ function calc_pi(prec) { if (need_G) G = G1 * G2; else - G = 0d; + G = 0m; } return [P, Q, G]; } @@ -44,7 +44,7 @@ function calc_pi(prec) { Q = BigDecimal.div(Q, (P + Q * CHUD_A), { roundingMode: "half-even", maximumSignificantDigits: prec }); - G = (CHUD_C / 12d) * BigDecimal.sqrt(CHUD_C, + G = (CHUD_C / 12m) * BigDecimal.sqrt(CHUD_C, { roundingMode: "half-even", maximumSignificantDigits: prec }); return Q * G; @@ -64,7 +64,5 @@ function calc_pi(prec) { /* we add more digits to reduce the probability of bad rounding for the last digits */ r = calc_pi(n_digits + 20); - r = BigDecimal.round(r, { roundingMode: "down", - maximumFractionDigits: n_digits }) - print(r); + print(r.toFixed(n_digits, "down")); })(); |