ENH: Detect all functions in complex.h

Set the HAVE_XXXX macros for all of the following functions.

    csin,   ccos,   ctan
    casin,  cacos,  catan
    csinh,  ccosh,  ctanh
    casinh, cacosh, catanh
    cexp,   clog,   cpow
    cabs,   csqrt,  carg
    cimag,  creal,  conj,
    cproj

The macros do not need to be used, but it is good to have all of
them available.

numpy/core/setup_common.py

@@ -138,23 +138,29 @@ def check_api_version(apiversion, codegen_dir):
 OPTIONAL_VARIABLE_ATTRIBUTES = ["__thread", "__declspec(thread)"]
 
 # Subset of OPTIONAL_STDFUNCS which may alreay have HAVE_* defined by Python.h
-OPTIONAL_STDFUNCS_MAYBE = ["expm1", "log1p", "acosh", "atanh", "asinh", "hypot",
-        "copysign", "ftello", "fseeko"]
+OPTIONAL_STDFUNCS_MAYBE = [
+    "expm1", "log1p", "acosh", "atanh", "asinh", "hypot", "copysign",
+    "ftello", "fseeko"
+    ]
 
 # C99 functions: float and long double versions
-C99_FUNCS = ["sin", "cos", "tan", "sinh", "cosh", "tanh", "fabs", "floor",
-        "ceil", "rint", "trunc", "sqrt", "log10", "log", "log1p", "exp",
-        "expm1", "asin", "acos", "atan", "asinh", "acosh", "atanh",
-        "hypot", "atan2", "pow", "fmod", "modf", 'frexp', 'ldexp',
-        "exp2", "log2", "copysign", "nextafter", "cbrt"]
-
+C99_FUNCS = [
+    "sin", "cos", "tan", "sinh", "cosh", "tanh", "fabs", "floor", "ceil",
+    "rint", "trunc", "sqrt", "log10", "log", "log1p", "exp", "expm1",
+    "asin", "acos", "atan", "asinh", "acosh", "atanh", "hypot", "atan2",
+    "pow", "fmod", "modf", 'frexp', 'ldexp', "exp2", "log2", "copysign",
+    "nextafter", "cbrt"
+    ]
 C99_FUNCS_SINGLE = [f + 'f' for f in C99_FUNCS]
 C99_FUNCS_EXTENDED = [f + 'l' for f in C99_FUNCS]
-
-C99_COMPLEX_TYPES = ['complex double', 'complex float', 'complex long double']
-
-C99_COMPLEX_FUNCS = ['creal', 'cimag', 'cabs', 'carg', 'cexp', 'csqrt', 'clog',
-                  'ccos', 'csin', 'cpow']
+C99_COMPLEX_TYPES = [
+    'complex double', 'complex float', 'complex long double'
+    ]
+C99_COMPLEX_FUNCS = [
+    "cabs", "cacos", "cacosh", "carg", "casin", "casinh", "catan",
+    "catanh", "ccos", "ccosh", "cexp", "cimag", "clog", "conj", "cpow",
+    "cproj", "creal", "csin", "csinh", "csqrt", "ctan", "ctanh"
+    ]
 
 def fname2def(name):
     return "HAVE_%s" % name.upper()