diff --git a/reactos/lib/sdk/crt/crt.rbuild b/reactos/lib/sdk/crt/crt.rbuild
index 5c06273be9d..06a586f053f 100644
--- a/reactos/lib/sdk/crt/crt.rbuild
+++ b/reactos/lib/sdk/crt/crt.rbuild
@@ -26,6 +26,7 @@
 	<define name="_MSVCRT_" />
 	<define name="_MT" />
 	<define name="_CRTBLD" />
+	<define name="__CRT__NO_INLINE" />
 	<directory name="conio">
 		<file>cgets.c</file>
 		<file>cprintf.c</file>
@@ -140,9 +141,11 @@
 				<file>aullrem_asm.s</file>
 				<file>aullshr_asm.s</file>
 				<file>ceil_asm.s</file>
+				<file>ceilf.S</file>
 				<file>cos_asm.s</file>
 				<file>fabs_asm.s</file>
 				<file>floor_asm.s</file>
+				<file>floorf.S</file>
 				<file>ftol_asm.s</file>
 				<file>log_asm.s</file>
 				<file>log10_asm.s</file>
@@ -153,9 +156,13 @@
 
 				<file>atan2.c</file>
 				<file>ci.c</file>
+				<file>cosf.c</file>
 				<file>exp.c</file>
 				<file>fmod.c</file>
+				<file>fmodf.c</file>
 				<file>ldexp.c</file>
+				<file>sinf.c</file>
+				<file>sqrtf.c</file>
 			</directory>
 			<!-- FIXME: we don't actually implement these... they recursively call themselves through an alias -->
 			<!--<file>j0_y0.c</file>
diff --git a/reactos/lib/sdk/crt/float/fpclass.c b/reactos/lib/sdk/crt/float/fpclass.c
index 82d3d4edb83..6d61b4252f5 100644
--- a/reactos/lib/sdk/crt/float/fpclass.c
+++ b/reactos/lib/sdk/crt/float/fpclass.c
@@ -25,7 +25,7 @@
 #define _FPCLASS_PINF	0x0200	/* positive infinity */
 
 
-#if __MINGW32_MAJOR_VERSION < 3 || __MINGW32_MINOR_VERSION < 3
+//#if __MINGW32_MAJOR_VERSION < 3 || __MINGW32_MINOR_VERSION < 3
 
 #define FP_SNAN       0x0001  //    signaling NaN
 #define	FP_QNAN       0x0002  //    quiet NaN
@@ -38,7 +38,7 @@
 #define FP_NNORM      0x0080  //    negative normalized non-zero
 #define FP_PNORM      0x0100  //    positive normalized non-zero
 
-#endif
+//#endif
 
 typedef int fpclass_t;
 
diff --git a/reactos/lib/sdk/crt/libcntpr.rbuild b/reactos/lib/sdk/crt/libcntpr.rbuild
index bb500d681f1..2f57e0eab5f 100644
--- a/reactos/lib/sdk/crt/libcntpr.rbuild
+++ b/reactos/lib/sdk/crt/libcntpr.rbuild
@@ -8,6 +8,7 @@
 	<define name="_NTDLLBUILD_" />
 	<define name="_LIBCNT_" />
 	<define name="_CRTBLD" />
+	<define name="__CRT__NO_INLINE" />
 	<if property="ARCH" value="i386">
 		<define name="__MINGW_IMPORT">"extern __attribute__ ((dllexport))"</define>
 	</if>
diff --git a/reactos/lib/sdk/crt/math/i386/ceilf.S b/reactos/lib/sdk/crt/math/i386/ceilf.S
new file mode 100644
index 00000000000..9eee272ecb3
--- /dev/null
+++ b/reactos/lib/sdk/crt/math/i386/ceilf.S
@@ -0,0 +1,55 @@
+/**
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is part of the w64 mingw-runtime package.
+ * No warranty is given; refer to the file DISCLAIMER.PD within this package.
+ */
+#include <_mingw_mac.h>
+
+	.file	"ceilf.S"
+	.text
+	.align 4
+.globl __MINGW_USYMBOL(ceilf)
+	.def	__MINGW_USYMBOL(ceilf);	.scl	2;	.type	32;	.endef
+__MINGW_USYMBOL(ceilf):
+#ifdef _WIN64
+	subq	$24,%rsp
+	movss	%xmm0,8(%rsp)
+	flds	8(%rsp)
+
+	fstcw	4(%rsp)			/* store fpu control word */
+
+	movl	$0x0800,%edx		/* round towards +oo */
+	orl	4(%rsp),%edx
+	andl	$0xfbff,%edx
+	movl	%edx,(%rsp)
+	fldcw	(%rsp)			/* load modified control word */
+
+	frndint				/* round */
+
+	fldcw	4(%rsp)			/* restore original control word */
+	fstps	8(%rsp)
+	movss	8(%rsp),%xmm0
+	addq	$24,%rsp
+	ret
+#else
+	flds	4(%esp)
+	subl	$8,%esp
+
+	fstcw	4(%esp)			/* store fpu control word */
+
+	/* We use here %edx although only the low 1 bits are defined.
+	   But none of the operations should care and they are faster
+	   than the 16 bit operations.  */
+	movl	$0x0800,%edx		/* round towards +oo */
+	orl	4(%esp),%edx
+	andl	$0xfbff,%edx
+	movl	%edx,(%esp)
+	fldcw	(%esp)			/* load modified control word */
+
+	frndint				/* round */
+
+	fldcw	4(%esp)			/* restore original control word */
+
+	addl	$8,%esp
+	ret
+#endif
diff --git a/reactos/lib/sdk/crt/math/i386/cosf.c b/reactos/lib/sdk/crt/math/i386/cosf.c
new file mode 100644
index 00000000000..d2329c7f254
--- /dev/null
+++ b/reactos/lib/sdk/crt/math/i386/cosf.c
@@ -0,0 +1,11 @@
+/**
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is part of the w64 mingw-runtime package.
+ * No warranty is given; refer to the file DISCLAIMER.PD within this package.
+ */
+#include <math.h>
+
+float cosf(float _X)
+{
+  return ((float)cos((double)_X));
+}
diff --git a/reactos/lib/sdk/crt/math/i386/floorf.S b/reactos/lib/sdk/crt/math/i386/floorf.S
new file mode 100644
index 00000000000..eec073b2376
--- /dev/null
+++ b/reactos/lib/sdk/crt/math/i386/floorf.S
@@ -0,0 +1,63 @@
+/*
+ * Written by J.T. Conklin <jtc@netbsd.org>.
+ * Public domain.
+ *
+ * Changes for long double by Ulrich Drepper <drepper@cygnus.com>
+ * 
+ * Removed header file dependency for use in libmingwex.a by
+ *   Danny Smith <dannysmith@users.sourceforge.net>
+ */
+#include <_mingw_mac.h>
+
+	.file	"floorf.S"
+	.text
+#ifdef _WIN64
+	.align 8
+#else
+	.align 4
+#endif
+.globl __MINGW_USYMBOL(floorf)
+	.def	__MINGW_USYMBOL(floorf);	.scl	2;	.type	32;	.endef
+__MINGW_USYMBOL(floorf):
+#ifdef _WIN64
+	subq	$24,%rsp
+	movss	%xmm0,8(%rsp)
+	flds	8(%rsp)
+
+	fstcw	4(%rsp)			/* store fpu control word */
+	movl	$0x400,%edx		/* round towards -oo */
+	orl	4(%rsp),%edx
+	andl	$0xf7ff,%edx
+	movl	%edx,(%rsp)
+	fldcw	(%rsp)			/* load modified control word */
+
+	frndint				/* round */
+
+	fldcw	4(%rsp)			/* restore original control word */
+
+	fstps	8(%rsp)
+	movss	8(%rsp),%xmm0
+	addq	$24,%rsp
+	ret
+#else
+	flds	4(%esp)
+	subl	$8,%esp
+
+	fstcw	4(%esp)			/* store fpu control word */
+
+	/* We use here %edx although only the low 1 bits are defined.
+	   But none of the operations should care and they are faster
+	   than the 16 bit operations.  */
+	movl	$0x400,%edx		/* round towards -oo */
+	orl	4(%esp),%edx
+	andl	$0xf7ff,%edx
+	movl	%edx,(%esp)
+	fldcw	(%esp)			/* load modified control word */
+
+	frndint				/* round */
+
+	fldcw	4(%esp)			/* restore original control word */
+
+	addl	$8,%esp
+	ret
+#endif
diff --git a/reactos/lib/sdk/crt/math/i386/fmodf.c b/reactos/lib/sdk/crt/math/i386/fmodf.c
new file mode 100644
index 00000000000..761f56c043e
--- /dev/null
+++ b/reactos/lib/sdk/crt/math/i386/fmodf.c
@@ -0,0 +1,28 @@
+/**
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is part of the w64 mingw-runtime package.
+ * No warranty is given; refer to the file DISCLAIMER.PD within this package.
+ */
+/*
+ * Written by J.T. Conklin <jtc@netbsd.org>.
+ * Public domain.
+ *
+ * Adapted for float type by Danny Smith
+ *  <dannysmith@users.sourceforge.net>.
+ */
+
+#include <math.h>
+
+float
+fmodf (float x, float y)
+{
+  float res = 0.0F;
+
+  asm ("1:\tfprem\n\t"
+       "fstsw   %%ax\n\t"
+       "sahf\n\t"
+       "jp      1b\n\t"
+       "fstp    %%st(1)"
+       : "=t" (res) : "0" (x), "u" (y) : "ax", "st(1)");
+  return res;
+}
diff --git a/reactos/lib/sdk/crt/math/i386/sinf.c b/reactos/lib/sdk/crt/math/i386/sinf.c
new file mode 100644
index 00000000000..1069dcf18b7
--- /dev/null
+++ b/reactos/lib/sdk/crt/math/i386/sinf.c
@@ -0,0 +1,11 @@
+/**
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is part of the w64 mingw-runtime package.
+ * No warranty is given; refer to the file DISCLAIMER.PD within this package.
+ */
+#include <math.h>
+
+float sinf(float _X)
+{
+  return ((float) sin ((double) _X));
+}
diff --git a/reactos/lib/sdk/crt/math/i386/sqrtf.c b/reactos/lib/sdk/crt/math/i386/sqrtf.c
new file mode 100644
index 00000000000..ff36a345b6d
--- /dev/null
+++ b/reactos/lib/sdk/crt/math/i386/sqrtf.c
@@ -0,0 +1,12 @@
+/**
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is part of the w64 mingw-runtime package.
+ * No warranty is given; refer to the file DISCLAIMER.PD within this package.
+ */
+#include <math.h>
+
+float
+sqrtf(float x)
+{
+   return ((float)sqrt((double)x));
+}