From 5c659ef298d2951c5ddd1d2b7bc4db3f86d8c437 Mon Sep 17 00:00:00 2001
From: drowe67 <david@rowetel.com>
Date: Fri, 7 Jul 2023 13:25:39 +0930
Subject: rm script directory

---
 script/gen_phi0 | 136 --------------------------------------------------------
 1 file changed, 136 deletions(-)
 delete mode 100755 script/gen_phi0

(limited to 'script/gen_phi0')

diff --git a/script/gen_phi0 b/script/gen_phi0
deleted file mode 100755
index af01a31..0000000
--- a/script/gen_phi0
+++ /dev/null
@@ -1,136 +0,0 @@
-#!/usr/bin/python3
-
-import math
-
-# Save the points in separate lists 
-points_t1 = []  # A list of tuples (x, r)
-points_t2 = []  # A list of tuples (x, r)
-points_t3 = []  # A list of tuples (x, r)
-
-######################################################
-# Generate
-######################################################
-
-adj = 0.50  # Offset ratio for step of 1, estimate
-
-def loop_even(upper, lower, step, ary):
-  result = []
-  for i in range((int)(upper * step), (int)(lower * step), -1):
-    x = i / step
-    z = math.exp(x + (adj / step))
-    r = math.log((z+1)/(z-1))
-    ary.append( (x, r) )
-
-#####
-# Create initial list which will be sorted desending
-
-# Tbl-1 9:5 in linear steps of 0.5
-loop_even(9.999, 4.999, 2, points_t1)
-
-# Tbl-2 5:1 in linear steps of 1/16
-loop_even(4.999, 0.999, 16, points_t2)
-
-# Tbl-3 log steps:  1/(2^0.5), 1/(2^1), 1/(2^1.5), ...
-for i in range(1, 28):
-    e = (2 ** (i/2))
-    x = 1.0 / e
-    z = math.exp(x+ (.19 / e))
-    r = math.log((z+1)/(z-1))
-    points_t3.append( (x, r) )
-
-
-######################################################
-# Output
-######################################################
-
-print("""
-// phi0.c
-//
-// An approximation of the function
-//
-// This file is generated by the gen_phi0 scripts
-// Any changes should be made to that file, not this one
-
-#include <stdint.h>
-
-#define SI16(f) ((int32_t)(f * (1<<16)))
-
-float phi0( float xf ) {
-
-    int32_t x = SI16(xf);
-
-    if (x >= SI16(10.0f)) return(0.0f);
-""", end="")
-
-
-##################################
-# Tbl-1 9:5 in linear steps of 0.5  (9.5, 9.0, 8.5, 8.0, .., 5.0)
-print("""    else {
-      if (x >= SI16(5.0f)) {
-        int i = 19 - (x >> 15);
-        switch (i) {
-""", end="")
-for i in range(len(points_t1)):
-    #assert(points_t1[i][0] == ((18 - i) / 2))
-    print("{}case {}: return({:.9f}f); // ({:.1f})".format(
-        (10*" "), i, points_t1[i][1], points_t1[i][0]))
-print("{}}}".format(( 8*" ")))
-print("{}}}".format(( 6*" ")))
-
-
-##################################
-# Tbl-2 5:1 in linear steps of 1/16  (4-15/16, 4-7/7, ... 1)
-print("""      else {
-        if (x >= SI16(1.0f)) {
-          int i = 79 - (x >> 12);
-          switch (i) {
-""", end="")
-for i in range(len(points_t2)):
-    #assert(points_t2[i][0] == ((18 - i) / 2))
-    print("{}case {}: return({:.9f}f); // ({:.4f})".format(
-        (12*" "), i, points_t2[i][1], points_t2[i][0]))
-print("{}}}".format((10*" ")))
-print("{}}}".format(( 8*" ")))
-
-
-##################################
-# Tbl-3 log steps:  1/(2^0.5), 1/(2^1), 1/(2^1.5), ...
-# Output as a balanced search
-
-def prnt_cmp(x, ind):
-    print("{}if (x > SI16({:.6f}f)) {{".format((" "*ind), x))
-
-def prnt_rtn(r, ind):
-    print("{}return({:.9f}f);".format((" "*ind), r))
-
-def one_level(pts, ind, dft):
-    #print("# One_Level({})".format(pts))
-    mid = (int)(len(pts)/2)
-    lft = pts[:mid]
-    rgt = pts[mid+1:]
-    x = pts[mid][0]
-    r = pts[mid][1]
-    #print("## {}, {}, {}".format(lft, x, rgt))
-    prnt_cmp(x, ind)
-    if (len(lft)): 
-        one_level(lft, ind+2, r)
-    else:
-        prnt_rtn(r, (ind+2))
-    print("{}}} else {{".format((" "*(ind))))
-    if (len(rgt)): 
-        one_level(rgt, ind+2, dft)
-    else:
-        prnt_rtn(dft, (ind+2))
-    print("{}}}".format((" "*(ind))))
-    
-
-# Start recursive process
-print("{}else {{".format((8*" ")))
-indent = 10
-one_level(points_t3, indent, 10)
-print("{}}}".format((8*" ")))  # End of tb1_1
-print("{}}}".format((6*" ")))  # End of tb1_2
-print("{}}}".format((4*" ")))  # End of tb1_3
-print("{}return(10.0f);".format((4*" ")))
-print("}")
-
-- 
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