From 84722b0c9d0d99eaeab0e6e286280a77de840620 Mon Sep 17 00:00:00 2001 From: Luke Kenneth Casson Leighton Date: Sun, 28 Apr 2019 17:49:20 +0100 Subject: [PATCH] minor tidyup --- src/add/fsqrt.py | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/src/add/fsqrt.py b/src/add/fsqrt.py index 285492c6..135c0f70 100644 --- a/src/add/fsqrt.py +++ b/src/add/fsqrt.py @@ -76,14 +76,14 @@ def decode_fp32(x): def main(mantissa, exponent): if exponent & 1 != 0: - return sqrt(mantissa << 1), ((exponent - 1) / 2) # shift mantissa up - # subtract 1 from exp to compensate - return sqrt(mantissa), (exponent / 2) # mantissa as-is - # no compensating needed on exp + # shift mantissa up, subtract 1 from exp to compensate + return sqrt(mantissa << 1), (exponent - 1) >> 1 + # mantissa as-is, no compensating needed on exp + return sqrt(mantissa), (exponent >> 1) if __name__ == '__main__': - for Q in range(1, int(1e7)): + for Q in range(1, int(1e4)): print(Q, sqrt(Q), sqrtsimple(Q), int(Q**0.5)) assert int(Q**0.5) == sqrtsimple(Q), "Q sqrtsimpl fail %d" % Q assert int(Q**0.5) == sqrt(Q), "Q sqrt fail %d" % Q @@ -92,6 +92,7 @@ if __name__ == '__main__': for e in range(25): for m in range(25): print(main(m, e)) + """ //This is the main code of integer sqrt function found here:http://verilogcodes.blogspot.com/2017/11/a-verilog-function-for-finding-square-root.html // -- 2.30.2