[newlib-cygwin] Use nanf() instead of nan() in single-precision float libm math functions

[newlib-cygwin] Use nanf() instead of nan() in single-precision float libm math functions

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=b644774b8f796d58ff9ac71af2c6aa0fa1cbcaf9

commit b644774b8f796d58ff9ac71af2c6aa0fa1cbcaf9
Author: Jozef Lawrynowicz <jozef.l@mittosystems.com>
Date:   Tue Jan 22 10:40:18 2019 +0000

    Use nanf() instead of nan() in single-precision float libm math functions
    
    This patch reduces code size for a few single-precision float math
    functions, by using nanf() instead of nan() where required.

Diff:
---
 newlib/libm/math/wf_acos.c  | 2 +-
 newlib/libm/math/wf_asin.c  | 2 +-
 newlib/libm/math/wf_log.c   | 2 +-
 newlib/libm/math/wf_log10.c | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/newlib/libm/math/wf_acos.c b/newlib/libm/math/wf_acos.c
index 15d8699..c24912d 100644
--- a/newlib/libm/math/wf_acos.c
+++ b/newlib/libm/math/wf_acos.c
@@ -31,7 +31,7 @@
 	if(fabsf(x)>1.0f) {
 	    /* acosf(|x|>1) */
 	    errno = EDOM;
-	    return (float) nan("");
+	    return nanf("");
 	} else
 	    return z;
 #endif
diff --git a/newlib/libm/math/wf_asin.c b/newlib/libm/math/wf_asin.c
index 2f9ffaf..c9f15e3 100644
--- a/newlib/libm/math/wf_asin.c
+++ b/newlib/libm/math/wf_asin.c
@@ -38,7 +38,7 @@
 	if(fabsf(x)>1.0f) {
 	    /* asinf(|x|>1) */
 	    errno = EDOM;
-	    return (float)nan("");
+	    return nanf("");
 	} else
 	    return z;
 #endif
diff --git a/newlib/libm/math/wf_log.c b/newlib/libm/math/wf_log.c
index 93d1d21..97f4a7f 100644
--- a/newlib/libm/math/wf_log.c
+++ b/newlib/libm/math/wf_log.c
@@ -41,7 +41,7 @@
 	} else { 
 	    /* logf(x<0) */
 	    errno = EDOM;
-	    return nan("");
+	    return nanf("");
         }
 #endif
 }
diff --git a/newlib/libm/math/wf_log10.c b/newlib/libm/math/wf_log10.c
index c9f8ecb..529ed65 100644
--- a/newlib/libm/math/wf_log10.c
+++ b/newlib/libm/math/wf_log10.c
@@ -41,7 +41,7 @@
 	    } else { 
 		/* log10f(x<0) */
 		errno = EDOM;
-		return nan("");
+		return nanf("");
             }
 	} else
 	    return z;