Add NO_SQRTF_INTRINSIC for z_rumble.c and audio/general.c (zeldaret#2067)

Author: cadmic

Makefile

@@ -425,6 +425,10 @@ $(BUILD_DIR)/src/code/fault_drawer.o: CFLAGS += -trapuv
 $(BUILD_DIR)/src/code/fault_drawer.o: OPTFLAGS := -O2 -g3
 $(BUILD_DIR)/src/code/ucode_disas.o: OPTFLAGS := -O2 -g3
 
+ifeq ($(PLATFORM),N64)
+$(BUILD_DIR)/src/code/z_rumble.o: CFLAGS += -DNO_SQRTF_INTRINSIC
+endif
+
 ifeq ($(DEBUG),1)
 $(BUILD_DIR)/src/libc/%.o: OPTFLAGS := -g
 else
@@ -436,6 +440,10 @@ $(BUILD_DIR)/src/audio/%.o: OPTFLAGS := -O2
 # Use signed chars instead of unsigned for this audio file (needed to match AudioDebug_ScrPrt)
 $(BUILD_DIR)/src/audio/general.o: CFLAGS += -signed
 
+ifeq ($(PLATFORM),N64)
+$(BUILD_DIR)/src/audio/general.o: CFLAGS += -DNO_SQRTF_INTRINSIC
+endif
+
 # Put string literals in .data for some audio files (needed to match these files with literals)
 $(BUILD_DIR)/src/audio/sfx.o: CFLAGS += -use_readwrite_const
 $(BUILD_DIR)/src/audio/sequence.o: CFLAGS += -use_readwrite_const

include/libc/math.h

@@ -42,7 +42,9 @@ f32 fabsf(f32 f);
 #endif
 
 f32 sqrtf(f32 f);
-#ifdef __sgi
+// IDO has a sqrtf intrinsic, but in N64 versions it's not used for some files.
+// For these files we define NO_SQRTF_INTRINSIC to use the sqrtf function instead.
+#if defined(__sgi) && !defined(NO_SQRTF_INTRINSIC)
 #pragma intrinsic(sqrtf)
 #endif