From: Rich Felker <dalias@aerifal.cx>
Date: Thu, 22 Mar 2012 19:54:55 +0000 (-0400)
Subject: add creal/cimag macros in complex.h (and use them in the functions defs)
X-Git-Tag: v0.8.8~73
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=13e400b3559666b5e584bdf6f8450aad826b43ae;p=oweals%2Fmusl.git

add creal/cimag macros in complex.h (and use them in the functions defs)
---

diff --git a/include/complex.h b/include/complex.h
index 8ee70575..90496bd5 100644
--- a/include/complex.h
+++ b/include/complex.h
@@ -97,6 +97,17 @@ double creal(double complex);
 float crealf(float complex);
 long double creall(long double complex);
 
+#define __CREALIMAG(x, t, i) \
+	((union { _Complex t __z; t __xy[2]; }){(_Complex t)(x)}.__xy[i])
+
+#define creal(x) __CREALIMAG(x, double, 0)
+#define crealf(x) __CREALIMAG(x, float, 0)
+#define creall(x) __CREALIMAG(x, long double, 0)
+
+#define cimag(x) __CREALIMAG(x, double, 1)
+#define cimagf(x) __CREALIMAG(x, float, 1)
+#define cimagl(x) __CREALIMAG(x, long double, 1)
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/complex/cimag.c b/src/complex/cimag.c
index 5e1ad46b..00955641 100644
--- a/src/complex/cimag.c
+++ b/src/complex/cimag.c
@@ -2,6 +2,5 @@
 
 double (cimag)(double complex z)
 {
-	union dcomplex u = {z};
-	return u.a[1];
+	return cimag(z);
 }
diff --git a/src/complex/cimagf.c b/src/complex/cimagf.c
index 99fffc58..f7bcd76e 100644
--- a/src/complex/cimagf.c
+++ b/src/complex/cimagf.c
@@ -2,6 +2,5 @@
 
 float (cimagf)(float complex z)
 {
-	union fcomplex u = {z};
-	return u.a[1];
+	return cimagf(z);
 }
diff --git a/src/complex/cimagl.c b/src/complex/cimagl.c
index d9a0780c..9ec24eee 100644
--- a/src/complex/cimagl.c
+++ b/src/complex/cimagl.c
@@ -2,6 +2,5 @@
 
 long double (cimagl)(long double complex z)
 {
-	union lcomplex u = {z};
-	return u.a[1];
+	return cimagl(z);
 }
diff --git a/src/complex/creal.c b/src/complex/creal.c
index 2bb91812..f6703040 100644
--- a/src/complex/creal.c
+++ b/src/complex/creal.c
@@ -1,6 +1,6 @@
 #include <complex.h>
 
-double creal(double complex z)
+double (creal)(double complex z)
 {
-	return z;
+	return creal(z);
 }
diff --git a/src/complex/crealf.c b/src/complex/crealf.c
index 078232f0..5dc3ff1d 100644
--- a/src/complex/crealf.c
+++ b/src/complex/crealf.c
@@ -1,6 +1,6 @@
 #include <complex.h>
 
-float crealf(float complex z)
+float (crealf)(float complex z)
 {
-	return z;
+	return crealf(z);
 }
diff --git a/src/complex/creall.c b/src/complex/creall.c
index 56e64097..fd9dc347 100644
--- a/src/complex/creall.c
+++ b/src/complex/creall.c
@@ -1,6 +1,6 @@
 #include <complex.h>
 
-long double creall(long double complex z)
+long double (creall)(long double complex z)
 {
-	return z;
+	return creall(z);
 }
diff --git a/src/internal/libm.h b/src/internal/libm.h
index 67c42b98..8c5474a8 100644
--- a/src/internal/libm.h
+++ b/src/internal/libm.h
@@ -173,14 +173,6 @@ union lcomplex {
 	long double a[2];
 };
 
-// FIXME: move to complex.h ?
-#define creal(z) ((double)(z))
-#define crealf(z) ((float)(z))
-#define creall(z) ((long double)(z))
-#define cimag(z) ((union dcomplex){(z)}.a[1])
-#define cimagf(z) ((union fcomplex){(z)}.a[1])
-#define cimagl(z) ((union lcomplex){(z)}.a[1])
-
 /* x + y*I is not supported properly by gcc */
 #define cpack(x,y) ((union dcomplex){.a={(x),(y)}}.z)
 #define cpackf(x,y) ((union fcomplex){.a={(x),(y)}}.z)