Initial commitHEADmaster

* codec2 cut-down version 1.2.0
* Remove codebook and generation of sources
* remove c2dec c2enc binaries
* prepare for emscripten

1 files changed, 290 insertions, 0 deletions

diff --git a/src/phi0.c b/src/phi0.c
new file mode 100644
index 0000000..51582a0
--- /dev/null
+++ b/src/phi0.c
@@ -0,0 +1,290 @@
+
+// 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);
+  else {
+    if (x >= SI16(5.0f)) {
+      int i = 19 - (x >> 15);
+      switch (i) {
+        case 0:
+          return (0.000116589f);  // (9.5)
+        case 1:
+          return (0.000192223f);  // (9.0)
+        case 2:
+          return (0.000316923f);  // (8.5)
+        case 3:
+          return (0.000522517f);  // (8.0)
+        case 4:
+          return (0.000861485f);  // (7.5)
+        case 5:
+          return (0.001420349f);  // (7.0)
+        case 6:
+          return (0.002341760f);  // (6.5)
+        case 7:
+          return (0.003860913f);  // (6.0)
+        case 8:
+          return (0.006365583f);  // (5.5)
+        case 9:
+          return (0.010495133f);  // (5.0)
+      }
+    } else {
+      if (x >= SI16(1.0f)) {
+        int i = 79 - (x >> 12);
+        switch (i) {
+          case 0:
+            return (0.013903889f);  // (4.9375)
+          case 1:
+            return (0.014800644f);  // (4.8750)
+          case 2:
+            return (0.015755242f);  // (4.8125)
+          case 3:
+            return (0.016771414f);  // (4.7500)
+          case 4:
+            return (0.017853133f);  // (4.6875)
+          case 5:
+            return (0.019004629f);  // (4.6250)
+          case 6:
+            return (0.020230403f);  // (4.5625)
+          case 7:
+            return (0.021535250f);  // (4.5000)
+          case 8:
+            return (0.022924272f);  // (4.4375)
+          case 9:
+            return (0.024402903f);  // (4.3750)
+          case 10:
+            return (0.025976926f);  // (4.3125)
+          case 11:
+            return (0.027652501f);  // (4.2500)
+          case 12:
+            return (0.029436184f);  // (4.1875)
+          case 13:
+            return (0.031334956f);  // (4.1250)
+          case 14:
+            return (0.033356250f);  // (4.0625)
+          case 15:
+            return (0.035507982f);  // (4.0000)
+          case 16:
+            return (0.037798579f);  // (3.9375)
+          case 17:
+            return (0.040237016f);  // (3.8750)
+          case 18:
+            return (0.042832850f);  // (3.8125)
+          case 19:
+            return (0.045596260f);  // (3.7500)
+          case 20:
+            return (0.048538086f);  // (3.6875)
+          case 21:
+            return (0.051669874f);  // (3.6250)
+          case 22:
+            return (0.055003924f);  // (3.5625)
+          case 23:
+            return (0.058553339f);  // (3.5000)
+          case 24:
+            return (0.062332076f);  // (3.4375)
+          case 25:
+            return (0.066355011f);  // (3.3750)
+          case 26:
+            return (0.070637993f);  // (3.3125)
+          case 27:
+            return (0.075197917f);  // (3.2500)
+          case 28:
+            return (0.080052790f);  // (3.1875)
+          case 29:
+            return (0.085221814f);  // (3.1250)
+          case 30:
+            return (0.090725463f);  // (3.0625)
+          case 31:
+            return (0.096585578f);  // (3.0000)
+          case 32:
+            return (0.102825462f);  // (2.9375)
+          case 33:
+            return (0.109469985f);  // (2.8750)
+          case 34:
+            return (0.116545700f);  // (2.8125)
+          case 35:
+            return (0.124080967f);  // (2.7500)
+          case 36:
+            return (0.132106091f);  // (2.6875)
+          case 37:
+            return (0.140653466f);  // (2.6250)
+          case 38:
+            return (0.149757747f);  // (2.5625)
+          case 39:
+            return (0.159456024f);  // (2.5000)
+          case 40:
+            return (0.169788027f);  // (2.4375)
+          case 41:
+            return (0.180796343f);  // (2.3750)
+          case 42:
+            return (0.192526667f);  // (2.3125)
+          case 43:
+            return (0.205028078f);  // (2.2500)
+          case 44:
+            return (0.218353351f);  // (2.1875)
+          case 45:
+            return (0.232559308f);  // (2.1250)
+          case 46:
+            return (0.247707218f);  // (2.0625)
+          case 47:
+            return (0.263863255f);  // (2.0000)
+          case 48:
+            return (0.281099022f);  // (1.9375)
+          case 49:
+            return (0.299492155f);  // (1.8750)
+          case 50:
+            return (0.319127030f);  // (1.8125)
+          case 51:
+            return (0.340095582f);  // (1.7500)
+          case 52:
+            return (0.362498271f);  // (1.6875)
+          case 53:
+            return (0.386445235f);  // (1.6250)
+          case 54:
+            return (0.412057648f);  // (1.5625)
+          case 55:
+            return (0.439469363f);  // (1.5000)
+          case 56:
+            return (0.468828902f);  // (1.4375)
+          case 57:
+            return (0.500301872f);  // (1.3750)
+          case 58:
+            return (0.534073947f);  // (1.3125)
+          case 59:
+            return (0.570354566f);  // (1.2500)
+          case 60:
+            return (0.609381573f);  // (1.1875)
+          case 61:
+            return (0.651427083f);  // (1.1250)
+          case 62:
+            return (0.696805010f);  // (1.0625)
+          case 63:
+            return (0.745880827f);  // (1.0000)
+        }
+      } else {
+        if (x > SI16(0.007812f)) {
+          if (x > SI16(0.088388f)) {
+            if (x > SI16(0.250000f)) {
+              if (x > SI16(0.500000f)) {
+                if (x > SI16(0.707107f)) {
+                  return (0.922449644f);
+                } else {
+                  return (1.241248638f);
+                }
+              } else {
+                if (x > SI16(0.353553f)) {
+                  return (1.573515241f);
+                } else {
+                  return (1.912825912f);
+                }
+              }
+            } else {
+              if (x > SI16(0.125000f)) {
+                if (x > SI16(0.176777f)) {
+                  return (2.255740095f);
+                } else {
+                  return (2.600476919f);
+                }
+              } else {
+                return (2.946130351f);
+              }
+            }
+          } else {
+            if (x > SI16(0.022097f)) {
+              if (x > SI16(0.044194f)) {
+                if (x > SI16(0.062500f)) {
+                  return (3.292243417f);
+                } else {
+                  return (3.638586634f);
+                }
+              } else {
+                if (x > SI16(0.031250f)) {
+                  return (3.985045009f);
+                } else {
+                  return (4.331560985f);
+                }
+              }
+            } else {
+              if (x > SI16(0.011049f)) {
+                if (x > SI16(0.015625f)) {
+                  return (4.678105767f);
+                } else {
+                  return (5.024664952f);
+                }
+              } else {
+                return (5.371231340f);
+              }
+            }
+          }
+        } else {
+          if (x > SI16(0.000691f)) {
+            if (x > SI16(0.001953f)) {
+              if (x > SI16(0.003906f)) {
+                if (x > SI16(0.005524f)) {
+                  return (5.717801329f);
+                } else {
+                  return (6.064373119f);
+                }
+              } else {
+                if (x > SI16(0.002762f)) {
+                  return (6.410945809f);
+                } else {
+                  return (6.757518949f);
+                }
+              }
+            } else {
+              if (x > SI16(0.000977f)) {
+                if (x > SI16(0.001381f)) {
+                  return (7.104092314f);
+                } else {
+                  return (7.450665792f);
+                }
+              } else {
+                return (7.797239326f);
+              }
+            }
+          } else {
+            if (x > SI16(0.000173f)) {
+              if (x > SI16(0.000345f)) {
+                if (x > SI16(0.000488f)) {
+                  return (8.143812888f);
+                } else {
+                  return (8.490386464f);
+                }
+              } else {
+                if (x > SI16(0.000244f)) {
+                  return (8.836960047f);
+                } else {
+                  return (9.183533634f);
+                }
+              }
+            } else {
+              if (x > SI16(0.000086f)) {
+                if (x > SI16(0.000122f)) {
+                  return (9.530107222f);
+                } else {
+                  return (9.876680812f);
+                }
+              } else {
+                return (10.000000000f);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  return (10.0f);
+}